The Chetboard

Tired of building Teles and decided to build an electric classical along the lines of the Sand or Godin. Will probably use the JJB pickup system (basically same as K&K but cheaper) and was wondering where I can get an onboard preamp like that used on the above mentioned instruments. I could use an outboard one but would really rather have it installed in the guitar with the sliders through slots in the top. RMC and Barbera, etc. way too expensive for my budget so price is definitely a factor. Body will be hollowed 8/4 mahogany with cedar top braced like a traditional classical - I built one of these a few years back and it turned out well.