how big should my new red foot tortoise enclosure be, he will soon out grow his house, and also what should it be made out of right now I have a wood house but it wont keep the humidity that good and is starting to grow mold. the pet store said he is about 2-3 year old, he is 4 and a half inches long, and should I have it be an indoor or an outdoor in closure where I live the humidity is about 30% and there is a cat that lives next door. Sorry if i asked to much questions I don't know that much about tortoise enclosures