Good for you Drew - nothing like a serious process to keep you busy!
In my posts I've been addressing the Op's interest in making large fb b/w prints.
For color I mostly inkjet and digital c these days. It's been over a year since I last made an analogue c print over 20x30". But when I do I find it most efficient and timely to rent space in a service bureau with a 50" rt. Talk about versatility!
Nonetheless, I'd be interested in seeing some pictures of your diy temp-regulated drum rig. Sounds nuts.