First, while you don't HAVE to feed the same as the breeder fed a snake, it just makes the transition easier. When a snake in a new home is offered "familiar" prey they tend to eat sooner & more successfully, & besides, the OP indicated this was their plan, with the goal of changing to f/t prey when possible. Can they try f/t right off the bat? Sure. Some snakes will take it, & some won't.
This also begs the question though, how many BPs have you raised or kept? I have to ask because I don't see any BPs in your list of snakes that you currently keep. And because they're some of the fussiest snakes around, IMO. I try to advise what is most likely to work well, without jeopardizing the health of a snake (from unwanted fasting) when we have no way of knowing (A) just how much experience the OP has with snakes (they're a new member here) and also (B) just how healthy or well-fed their new snake is. I'm trying to recommend methods here that pose the least risk & the best chance for success (not frustration), since I think it's safe to say that none of us will be making a housecall to Idaho to help the OP with feeding their new pet if it refuses to eat.