Cash Cash CASH. they're not cheap and most have second jobs to pay for the rescue. also see if you aren't reinventing the wheel, maybe the herp society might know of a rescue in the area.
then there's the vet bills and being called to remove an animal, it's gotta be then, not when it's convenient for you.
Also what are the bylaws like? can you do that or do you need to register? what about hot snakes?