Pfft, that's not big! Try the Revell 1/48 kit! Lol. J/K. I know what you mean about running out of room. I recently had the same issue. Now I don't have a display case for my models, my living room doubles as a scale aircraft museum, lol. Once I got to around 30 models I started to run out of room, sort of. I didn't want it to start looking cluttered. Maybe it already does, I don't think so though. I recently brought home a shelf my Dad made around 30 years ago. He originally made it for a 55 gallon fish tank, but converted into a shelving unit.
So this has bought me more space. I had to move some things in the house around to accomadate it, which was fine by me, and hubby will eventually get used to it, lol. I'm hoping the 1/48 B-17G kit I have to build eventually will fit on the bottom portion of that stand. I may be pushing my luck though.