If the snake is still young, and hasn't had that many meals with you, continue to feed live. Then once it's established with you, and has enough weight on it, try to convert to f/t. Younger BPs are hard to get on f/t.
I dont know, my baby Lesser eats three "hoppers" a week for me, and he doesnt have a problem with the f/t
Mind that I call them "hoppers" since they're 6g each, which is like 75% of the weight of most bulk supplier's hoppers.