Those red drive cages are made by iStarUSA. I don't remember the exact model number. However, I don't recommend using them in any heat-sensitive build (with 7200 RPM drives), as the airflow through those drive cages is pretty sub-par.
Where did you find the Cooler Master 590? That case is discontinued and thus quite difficult to source. I've only been able to find them used.
The site says the case is on back/pre-order, so I doubt they have updated it discontinued on their site.
I'd really like to build this, but just nervous, don't want to waste my money. I should probably just go with a bigger tower since I do plan on slowly adding more storage.
Here is the case I seen from another thread, I really like it.
http://www.raidmax.com/chassis/platinum.html
I just need some encouragement that I won't break anything, lol.