It looks like we a difference in opinion because I frankly don't like the way corns look. I prefer the ball python
Anyway, it looks like you know what you're doing, but you are right, one mouse a week looks way too small for him/her. Also I like to feed in the cage because I feel like that's the better way to go, but that has been debated a lot on this forum and other forums. As for him not going in his hide, have you been handling him a lot? It takes balls generally about a week before they feel settled in, and it is advised that you leave them alone for this time. I would skip the feeding this week and maybe try feeding him early next week or so. That's just my $0.02.
This forum is a big help, I'm new to bp's as well and I've learned so much from this site.