OK now that I’ve calmed down. The irony is that with a good clutch setup you wont have to spin those RPM’s on the top, rather you will be slipping the clutch at the bottom end. It might even be worth changing your pipe to suit. It goes against the direct drive mantra, but overall it will be faster.
Go to the two stroke section on 4cycle.com and ask about jackshafts and clutches. You could probably pickup a suitable combo under the classifieds, used for about $300.
Nice motor by the way :)