Most luthiers would be quite good. What about the chaps at wizard pickups? The most they could try to push would be their pups...
Or there's acg,shuker,sei,status.
Or amp cab builders. Most professionals are professional enough to actual advise what is suitable rather than what would benefit them.
+1 on nick though, top chap. Or talk to someone on here who you knew that plays the kind of music/sound that you want to achieve