That's a recipe for overkill and a boring race. You shouldn't race the F1 car against anything but F1 cars. Doing so means you needed to practice more, not just get a bigger hammer. The Toyota Minolta is very capable of winning the GTWC itself - absolutely no need to get the FGT car. Also, if you are going to pit once during a race, your best strategy is to pit at the halfway point rather than when the tires get red. By pitting at the middle you maximize your time with good tires.