Hey bikenut, just something to consider on your next build...
Unless you absolutely MUST be able to change front derailleur gears when riding you can try this:
Just put the chain on the front sprocket you want and pull off the front derailleur and it's control.
Put the rear derailleur control and clutch on the left side.
Put a dual pull brake lever and the throttle on the right.
In this case I used a CNS carb choke lever for the rear derailleur as well because the one on the bike was built into a lever as well, but most turn controls will work on the left just dandy.