Pretty much finished the front wall this evening.
Framed in the 2 - 24" motorized intake shutters. I also worked on purlin clamps today. I'm not paying $2.50+ a piece for them, I made a fixture and bent a few in 16ga steel to get measurements right, looks like they will be pretty easy to make. I'm having a local shop shear me a bunch of 3/4" wide 16ga galvanized strips out of scrap/off all, then I'll cut them to 8" long, drill the holes and bend them up.
