No one is trying to be mean, or provide inadequate help. But it is a harsh truth that you didn't do your research and there is consequences for that (hopefully the animal doesn't reap the punishment)
Everyone on here is a huge preacher of doing your research before getting any animal, because all the love in the world doesn't provide them with everything they need, so we're warning you not to impulsively buy an animal.

Anyways, not sure anyone answered about sizes, but I can't see either snake that clearly to tell you what size to feed them. You can find YouTube videos, or do your research now before it's not to late. There are also pinned threads about size, general care etc on this forum