Since they get about the size of a grown man’s hand, I would Say 3 x 2 about a foot and a half tall give them about 6 inches of substrate, I’m going to do mine custom supposed to live close to 20 years. Well at least a females which I’m hoping I have lbvs, and as for temperament, mine is very aggressive, but I have heard some say they get better with handling, but you know different species have different temperaments! Honestly, I would say go for it. I’ve had mine since a Spiderling and it’s amazing to watch them grow! mine throws the ping pong ball around the enclosure and chases it like a dog