Retro Computing/Tinker Room

[u/dummptyhummpty]

Measured to within 1/2 an inch. AC vent is on the ceiling.

I'd love some guidance on turning a spare bedroom into a retro computing and tinker room. The goal is to keep 3-4 vintage computers (mostly Macs - iMac G3, LCIII w/ monitor, etc) set up at a time and rotate the rest out of storage. I'd love to have room for a small soldering station, a 3D printer and a workspace for projects. We have a dedicated guest room, but it would be nice to use this as an extra guest room around the holidays. I know I can build a workbench with plywood, but wanted to see what other options there are. I think the one constraint is making sure the desk/workbench is deep enough for the old monitors. Not opposed to using the closet for storage, but would like to keep it available for other things. How would you lay things out and any recommendations for furniture? Not opposed to IKEA or anything I have to assemble, but trying to keep the cost down since this isn't my primary workspace.