thank u both of u,

the problem is that im only a teemager, so breeding mice + rats would be a big deal on expenses, although i am waiting to get a job in about may and over the summer.
i will probably in the end make a switch from mice to rats, for convience wise, so it doesnt matter size wise on the ordent at witch time u start feeding rats, because im fine with feeding small rats and up, so ill probably go from large(or jumbo) mice to small rats...