Baby rabbits often change their temperament as they mature. A sweet little baby may become a hormonal terror when it gets older. Your best bet is to purchase a rabbit that is at least 3 months old, preferably 4 months. A rabbit is sexually mature at 6 months (except very large breeds, which mature at 8 months).
Rabbits love to chew and dig, so even if you "rabbit proof" your house, they may cause some damage.