I would not see the problem, Mine are tight and stacked on top of each other. I use an upright side by side fridge for mine. I can fit 4 in there. They are tight, but as long as the hoses clear, I have no problems.
I can fit 5 kegs in my 7.0 cu ft. keezer but it is a very tight fit. In fact sometimes I have to put a little keg lube on the outside of the kegs to get them out. That's what its meant for right?