goku, good story, and with your attitude I don't feel the need to point: "oh, wrecked a 250 and now you're upgrading to a 650" at you, since you seem to have your head on straight....
Think about possibly entering an advanced course, going to a track, or putting in more time at a parking lot?
As a Ricky Racer on the road for a while, I'm simply sharing advice based on my experiences of my own prior bad judgement....
Enjoy the new bike, post up pics, and keep the rubber side down dude!