Ok, so i was thinking of using a spare cage i had for my BCI red-tail who is currently in a 30g but only uses a small percentage of it. do you think a cage that is 13"x13"x48" is big enough or would it be better to stick with the 30gallon? He's was born on 3/24 so he's still pretty small. I just wanted to see if i could save some space by using a different cage.