Remove motor, box it up ship to a sponsor of choosing, relay info you just gave us to them, wait a few weeks, work backwards from step one, go rip.
seriously tho if your really looking to haul the fucking mail, port it. But until then, your on the right track. Get a timing plate advance that 3-5 degrees, make sure motor is mechanically sound and has good compression, good spark and passes a leak down test. My riding season has just begun, so I'm in a mad rush to reassemble my shit. If your bike is good then ride it for now. Get really comfortable on it and see where you would like it to accel. And don't forget a fast motor is no good if you can't control the bike. So look into suspension upgrades as well.