I have a Crwler in the bridge of my PRS EG (which is also a bolt on neck), it works great there, but I've paired it with 2 BKP 90's. I might be tempted to put a Mississippi Queen in the neck with the bridge crawler, I think it would be an awesome combo, though you would lose some of the 5 way splits. I've got Cold Sweats in a BC Rich Mockingbird and like them there but given what you say about not needing powerful, I would be looking at Emeralds. They are a very underrated pickup. Holydivers will give you more bottom end and a bit more push, but I like the harmonics and tone of the Emeralds.