My darkroom is 4' x 10' and I do both color and B&W with a Beseler 23CII Dual Dichro. Color can be done in trays, but it's much easier with drums and a motor base of which Beseler are my fav. Their drums don't leak, are very sturdy and are very easy to fill/dump thanks to their spouts.

Unfortunately, there are fewer and fewer ways to print slides optically these days. Cibachrome is gone and interneg film is going away. Scanning is just about all that's left. 'Tho I do have an old slide copier I've been playing with lately.

+1 ventilation!

Decent price on an 8x10 drum, and the seller also has a Unicolor base (ends in 2 hours)-
http://www.ebay.com/itm/Beseler-colo...#ht_500wt_1202