Is it ok to remove the black rubber top and bottoms from kegs? I don't have room in the keezer for one, plus CO2 tank, but I think I could get two without tops and bottoms.
It won't sit flat. The bottoms are curved. It's also going to be difficult to lift without handles. But yes you can remove the rubber.
How much room do you need ? Cutting the top off will gain nothing it will not lower the disconnects. Cutting off the bottom off 1/4 to 1/2 inch ?