Wraith Prism - not in my experience
PSU - 650 wont do it. I know servers with less drives that need dual 1100W
Memory - Memory tends to work or not work, if you get a good supplier refurb can be ok. But it probably wont last as long.
SATA - LSI are recognised name with SAS cards and the 9211 is a decent card. However a SAS card has 4 lanes/phy for data (per connector) if you connect more than 4 disks to a connector they will be sharing the bandwidth of the connector/cable