Scottie,
My bike is pretty slippery, and I've managed a 143 mph record with 45 rear wheel hp. Using the rule of cubes (required hp increases at the cube of the desired new speed), I calculate that I can go 200 mph with 123 hp. And that requires everything to be perfect. My bike is partially streamlined with a specially built long low frame and fairing. I live in Lafayette, Colorado in the spring and fall, so I may be able to provide some help when I'm there. As for my significant other, she knows exactly what I spend because she keeps the books! I seem to be able to go thru 8 to 10K per year on upgrades (includes some other projects). Otherwise, I just might try to find 123 hp, somehow. Hard to do with a single cylinder. Learn to walk before you run.
Tom