Boxing career, please help?

My boyfriend is 16, he is into MMA & boxing. he wants to grow up to be a big fighter, we live in a small town and there is nowhere close for him to train, especially since he does not have his licenses yet, he is not so sure when he will get a car. he works out everyday ( P90x) i just bought him a heavy bag. he has gloves, punch mitts, ETC.. he wants to make this a career, but he cannot train right now. any ideas or tip as to what he should do in order to make this a career? thanks!