> Thanks for all the info, but what would you consider, adequate cooling? I have
> 2 system fans in the back and 1 in the front and a gaping hole above it because
> I put in a non-standard-shaped CDRW so the front panel won't fit anymore.

A fan or two constantly blowing air on each of your drives should be fine. Also, make sure your PSU doesn't feel like a boiling teapot. Your setup is fine if the air can flow through your case - it comes in fresh from one point, and comes warm out of another point.