Just for reference sake, here is the Fujimi Garage using two wall and floor kits joined together:
I only used one Fujimi Tools kit, plus a scratchbuilt table, and bits and bobs from the parts bins.
The biggest drawback to this setup for me was the clear tops sag in the middle, due to not having any support.
I've considered getting a thicker piece of plexiglass to use as a top.