Joe, I would advise against putting the tank on the inboard side, as it would go hopelessly rich in flight. I would recommend putting the tank down lower, and moving it outboard so the pickup tube is about 1/2" outboard of the needle valve. You will have to mount the tank on standoffs, but that will leave room for the throttle pushrod. You will also probably have to notch into the wing a bit, but on a foam wing it's no problem.
If this one works out, you can always build a full-fuselage version for next year!