I am hoping to get a 3 crested geckos as a breeding group. i have cage that is 27x18x24 would this be ok for 3-4 geckos. i would have eco earth as substrate. i was planning on getting them as young as i can while still having them old enough that i can buy them sexed. does all this sound ok? i am probably going to have to wait till april as that is the next reptile expo here in new england.