These are the carboard cutouts I made so I could see how things would fit. Here's how they actually fit.
The freezer is taller then I thought it was. With 3 kegs I don't have to build a collar for the freezer at all.

I could fit a fourth keg by building a stand for it, moving the co2 bottle to the compressor hump, and building a collar to make it tall enough. I'm not planning on doing that for a while.
I can get the co2, regulators, manifolds etc.. all inside the freezer without putting anything on the compressor hump. For the time being anyway, I'm going to put bottles on it.