Terrible. Sounds too much like beach (b****).
Also I think it sounds too sensual, like Apple and Velvet. A peach (any fruit really) is sometimes a symbol of sexuality. It's not hard to see why a peach is that. I think once you've seen, you can't unsee and think Peach is a good name.
Can't imagine naming an infant Peach, either. It'd be like an icky joke about eating babies.
- mirfak