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I agree with Daniel that cabinet is very beautiful!
My father is an avid collector of die cast model cars and has some dedicated cases made with sliding glass fronts. For me its my bookcase or small shelving unit for the time, neither are great and the dust gets to them but that's all I've got. In some ways I keep putting off my better kits for this reason. No where decent for them to live!
Harrison,
Pay close attention to the size of the shelves in each unit. Just for comparison, those cases that I have are 37+ inches across and 18+ inches deep on the inside. On the second shelf, I have four Spanish Civil War/Italian twin/tri-engined bombers packed along the back row - the wingspan on each is equal to a 1/72 scale SM 79 (which is actually one of the planes there) and I had to slightly rotate each bomber and overlap/interlace the wings to get all four in. In front of those there is just enough room for four smaller single engine Italian fighters with room for possibly two more.
Since most of your kits are 1/48, you should factor in the larger size of those kits - you'll only get about 2/3 as many kits into the same space.
Make sure you get something big enough for your purposes.
Thanks again.
Even if my wife reclaims them for other purposes, they do look cool.