trust me, you will change your cage, these c&c cages are addicting to change around, and easy! just time consuming!
i started off with a 6x2x2 cage for my bonded pair (a lop, and a new zealand white) so each got a little 3x2x2 space. but they always would just lay together anyways!
then i minimized their cage to a 4x2x2 for more room which they seemed to enjoy more! with the big 6x2x2 i had to make a support in the middle to hold it all together.
now they have a 3x3 pen made out of the c&c stuff and my mini rex and netherland dwarf have 3x3 too
bonded pairs are lazy, this is just my experience lol