Made a Differential Dolly

Cranky, I see the problem. You put too many shops in one building. Machine shop and possibly sheet metal could get along in one building. Storage is another and don't put anything that has to do with house/lawn in there. The assembly room is a place all unto it's self.:)
Had a storage building for awhile but the rent got too high to be worthwhile and once I sold off 75% of the stuff that was in it and brought the rest home. It still took me nearly a year to get rid of the rest of the unneeded stuff....and the shop was still over full lol. Got a box trailer and it didn't take long for it to pay for itself with the money I would have used for the storage building. Right now, it's holding most of the yard equipment plus some other stuff.