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3 Disks showing SMART prefail, which to replace first?

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I have three disks in a 15 disk array showing SMART prefail.  I have replacement drives (though not pre-cleared yet), but wanted to gauge opinions on which order to replace them as to minimize chances of data loss.  SMART reports for each drive are below.  Thanks.

 

Disk 2 / sdm

ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000f   114   090   006    Pre-fail  Always       -       64612936
  3 Spin_Up_Time            0x0003   092   092   000    Pre-fail  Always       -       0
  4 Start_Stop_Count        0x0032   100   100   020    Old_age   Always       -       66
  5 Reallocated_Sector_Ct   0x0033   100   100   036    Pre-fail  Always       -       400
  7 Seek_Error_Rate         0x000f   070   060   030    Pre-fail  Always       -       11248558
  9 Power_On_Hours          0x0032   055   055   000    Old_age   Always       -       39539
 10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   100   100   020    Old_age   Always       -       66
183 Runtime_Bad_Block       0x0032   099   099   000    Old_age   Always       -       1
184 End-to-End_Error        0x0032   100   100   099    Old_age   Always       -       0
187 Reported_Uncorrect      0x0032   099   099   000    Old_age   Always       -       1
188 Command_Timeout         0x0032   100   097   000    Old_age   Always       -       3 3 3
189 High_Fly_Writes         0x003a   100   100   000    Old_age   Always       -       0
190 Airflow_Temperature_Cel 0x0022   067   056   045    Old_age   Always       -       33 (Min/Max 23/34)
191 G-Sense_Error_Rate      0x0032   100   100   000    Old_age   Always       -       0
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       10
193 Load_Cycle_Count        0x0032   001   001   000    Old_age   Always       -       475843
194 Temperature_Celsius     0x0022   033   044   000    Old_age   Always       -       33 (0 19 0 0 0)
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0010   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       0
240 Head_Flying_Hours       0x0000   100   253   000    Old_age   Offline      -       5436h+05m+33.849s
241 Total_LBAs_Written      0x0000   100   253   000    Old_age   Offline      -       1411727509962
242 Total_LBAs_Read         0x0000   100   253   000    Old_age   Offline      -       31791961878189

Disk 3 / sdm

ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000f   119   096   006    Pre-fail  Always       -       211546592
  3 Spin_Up_Time            0x0003   093   093   000    Pre-fail  Always       -       0
  4 Start_Stop_Count        0x0032   100   100   020    Old_age   Always       -       65
  5 Reallocated_Sector_Ct   0x0033   097   097   010    Pre-fail  Always       -       3800
  7 Seek_Error_Rate         0x000f   050   050   030    Pre-fail  Always       -       476753486599
  9 Power_On_Hours          0x0032   057   057   000    Old_age   Always       -       38487
 10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   100   100   020    Old_age   Always       -       66
183 Runtime_Bad_Block       0x0032   099   099   000    Old_age   Always       -       1
184 End-to-End_Error        0x0032   100   100   099    Old_age   Always       -       0
187 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always       -       0
188 Command_Timeout         0x0032   100   099   000    Old_age   Always       -       1 1 1
189 High_Fly_Writes         0x003a   097   097   000    Old_age   Always       -       3
190 Airflow_Temperature_Cel 0x0022   069   057   045    Old_age   Always       -       31 (Min/Max 22/33)
191 G-Sense_Error_Rate      0x0032   100   100   000    Old_age   Always       -       0
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       13
193 Load_Cycle_Count        0x0032   001   001   000    Old_age   Always       -       447757
194 Temperature_Celsius     0x0022   031   043   000    Old_age   Always       -       31 (0 18 0 0 0)
197 Current_Pending_Sector  0x0012   099   099   000    Old_age   Always       -       176
198 Offline_Uncorrectable   0x0010   099   099   000    Old_age   Offline      -       176
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       0
240 Head_Flying_Hours       0x0000   100   253   000    Old_age   Offline      -       5034h+41m+05.185s
241 Total_LBAs_Written      0x0000   100   253   000    Old_age   Offline      -       22770899496
242 Total_LBAs_Read         0x0000   100   253   000    Old_age   Offline      -       139423370898

Disk 9 / sdg

ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000b   100   100   016    Pre-fail  Always       -       0
  2 Throughput_Performance  0x0005   135   135   054    Pre-fail  Offline      -       85
  3 Spin_Up_Time            0x0007   136   136   024    Pre-fail  Always       -       420 (Average 420)
  4 Start_Stop_Count        0x0012   100   100   000    Old_age   Always       -       103
  5 Reallocated_Sector_Ct   0x0033   100   100   005    Pre-fail  Always       -       61
  7 Seek_Error_Rate         0x000b   100   100   067    Pre-fail  Always       -       0
  8 Seek_Time_Performance   0x0005   133   133   020    Pre-fail  Offline      -       27
  9 Power_On_Hours          0x0012   093   093   000    Old_age   Always       -       53222
 10 Spin_Retry_Count        0x0013   100   100   060    Pre-fail  Always       -       0
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       103
192 Power-Off_Retract_Count 0x0032   099   099   000    Old_age   Always       -       1633
193 Load_Cycle_Count        0x0012   099   099   000    Old_age   Always       -       1633
194 Temperature_Celsius     0x0002   187   187   000    Old_age   Always       -       32 (Min/Max 20/45)
196 Reallocated_Event_Count 0x0032   100   100   000    Old_age   Always       -       67
197 Current_Pending_Sector  0x0022   100   100   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0008   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x000a   200   200   000    Old_age   Always       -       0

 

My vote would be replace disk 3 first then 2 then 9

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