You are better off starting with the forward CG and more throw on the elevator on any racer. This setup gives enough control authority to overcome slight problems with the wing/tail incidence errors. After you have flown it and trimmed it out, you can start to move the CG back and reduce the elevator throw to maintain your turning radius.

This lowers the drag of the airplane, since the stabilizer is always pulling down on conventional airplanes for a stable design. Moving the CG back lowers the amount of tail loading (negative lift), an also reduces the amount of positive lift that the wing has to generate thus lowering the overall drag.