Ok...
Welcome to the site.
Baby steps...ok?
First, pipe and jet the bike. Ride it....see if it's enough, see if you want more. Read and search around...see what kind of pipes people recommend for your style and locale.
Pipe the bike first. Then worry about making it even faster.
Do not waste your time and money just making the motor bigger...it's a gradual, combined process.
Get the cylinders ported next. After that...stop. You'll probably need a better clutch, better tires, and a gearing change to get that power to the ground. 20000 HP won't do any good if you can't get it to the ground.
Pipes, better air filter system, jet it...go from there.