A year old is way to big for either prey mentioned, to give you an idea they get started out of the egg on rat crawler or hopper mice.

Now I can't tell you what exact size you should feed since a year old does not mean much to me as snakes grow at different rate, however I can tell you that for now you need to feed a prey equal the animal's girth size (widest part of your BP's body), and once full grown your BP will not require anything larger than a small/medium rat.