Bought a nailgun but that sucked for framing so I said screw it. Two screws per stud.
2x10s for the upper loft deck and 23/32 tongue n groove ply.
Built the stairs from five 2x12. It'll hold.
Hired out the drywall. Decent job for a shop office.
Painted with many many coats of PVA sealing white.
Whats left? Outlets, install double door, and paint the corners.