I agree about the A3000 space issues the case is not user friendly (the 1000 and 2000 had alot more room) and adding extra hard drives or an excelorator is almost impossible without modification. You should look for at the least an A3000 tower and it has so much more space and you automaticly get a SCSI controler and High density flopy drives. Plus 4 PC slots and both a 13kHz and a 15kHz (with built in flicker fixer) video out.
I used to have one but sold it when I upgraded to my preasent A4000D.
By the way the above A2000 would do you very well (nice system)