Speedy, you'll do yourself out of work if you tell your customers how, where, and what to buy from other sources... which is exactly what you'll be doing if you admit to buying in all the parts.
We all buy in pickups, frets, tuners, bridges, wire, pots, etc etc etc. You are simply buying two more components out of 50 or so, that make up a guitar.
I'd rather see you make your own bodies and necks though, it isnt hard to do.
Westheman, the bent neck dive bomb was one of Randy Rhoads favorite techniques. I would not hesitate to do it to any guitar i own, as i know what force is neccessary to snap a neck... a lot more than you think. Cut out a rough neck blank and give it a go, you might surprise yourself (i know you will, actually).