Personally, I think that if you aren't sure you could sell or rehome the normals in your clutch, you shouldn't breed. It's not fair on the snakes. They don't decide what genetics they have.
White tiger breeders kill the cubs that aren't born with a white coat. Some dog breeders do the same type of thing. If you don't find that moral, I don't understand why it's okay to kill a snake for the same reasons.
But hey, I'm not a breeder, so you do you I suppose.