actually have two questions
is a 24L by 18W by 12H be ok for a adult male ball?

second question is...
my bedroom where i will be keeping the cages and or rack system is at its lowest 70 degrees during the winter months is better to use a cage or rack system for that reason? if i went with cages it would limit me on the number of bp i could have because of space and i cant have cages anywhere else..