I wish you sincere luck in your endeavor. There was another poster a few months ago that was asking about education/training and I mentioned Foley-Belsaw, which is still the best and most respected of the "cheap" options. I had totally spaced this option:
http://www.aloa.org/education/Click on 'Scholarship Information' on the left, and fill out the application. I am no longer a member for persoanl reasons, but their training is top-notch. I have taken many classes, PRP sittings, and went to the tradeshow -- once. You want real training if you are wanting to do this for a living. Lockmasters and MBA USA are in the same tier, although MBA is more towards the safe-tech end of the spectrum.
Another overlooked option is the 'institutional' locksmith route. Check out universitites, hospitals, commercial real estate companies, etc. Alot of them have staff locksmiths and might be more willing --budget wise-- to take on a trainee. You wont get the full-feature aspect, but if you can do that for a couple of years you can label yourself an expert on whichever brand of hardware/keying system the property has. I did it backwards, I was a field-technician and switched to a cozy institutional job. But I can tear-down a Schlage L-Series mortise lock Forrest-Gump-style and pin Everest Primus in my sleep.
HTH