Size of keezer

would a 5.2 cubic foot igloo chest freezer be big enough for a two keg system.

Depends on the configuration of the fridge/freezer.

Soda kegs are 9" or 10" in diameter (Pepsi/Coke). So make a couple of circles with cardboard and see if they fit.

I did alot of measuring when I was shopping and came to rest on the 7 cubic foot GE for 4 kegs. I would bet you could fit 2-3 in the 5. But as stated get a tape meausre and figure 10" to be safe.