Congrats, I bought an '07 new and have never regretted it-it has been bulletproof. I agree with the other posters about KTMTALK forums.....a huge amount of info there.
A couple of things I did right away was the cannistorectomy (look for it, AKA de-smog) a JD kit, a larger Clarke tank. The beast was a little twitchy on gravel but a Scott dampener took care of that. Important to set your sag-I couldn't get mine to co-operate and ended up re-valving and re-springing for my weight. A great bike!
I don't so much mind being old, as I mind being fat and old...