just another tidbit, and more to ponder about..
@phattpiggie What's important is to keep the capacitors as close as possible to the work coil. Technically, you can put the driving circuitry, including the two yellow chokes, next to the battery.
This would result in a minimal heating end unit which consists of a work coil and capacitor bank (coil+cap = "tank"), and the switch. The interconnect would have to change though, as you would need two conductors for the tank and two for the switch.
While in operation, most of the energy transfer is between the capacitors and the work coil. The pair can be thought of as a swing, like with a kid on it in a park. On a swing, energy goes from potential energy - the potential for gravity to force it to accelerate towards the ground, and kinetic energy - the speed it has accumulated during it's fall. Someone just needs to give a little push to compensate for losses. So, the tank is very similar, converting energy between magnetic field in the coil and electric field in the caps. The driving circuit just pushes a little on each side, at the right time.
Anyway, since most of the energy transfer is in the tank, the wires between the tank and driving circuit don't need to be overly beefy.. similar to those of the power supply should suffice. Just make sure the coil and caps are close and well connected.
Keep us updated, I love seeing everyones mods