$750? Custom? Nuh-uh. You could always buy an off the shelf guitar and "hot rod" it like many people do. You could do stuff like switch pickups (most common), switch bridges, etc etc. I even have a friend who stripped the paint off his LTD M (forgot model no, it has EMGs) and says it looks "sexy". I thought it was silly at first, but it acually looks quite cool.
Custom guitars I hear can start at around 4k and up. If you're really keen on it, practice hard, start a band, get well known and apply for endorsement!
Should give this a watch:
YouTube - Good & Bad Heavy Metal Guitars EXPANDED
Yesterday was history, tommrow is a mystery, today is a gift. I'm moving on and starting over. There are things that have been done and past. You cannot change what's done but you can change what has not been. I will fall down and I'll pick myself back up again.