The price is high. That said, the 2007 is a great bike and it does have low miles.
I would be at around 3k if the bike looks really really mint. Personally, I'd take off a little because I'm not a fan of that windshield mod.
Find out what rear shock he put on there. If it is a top end aftermarket, add a few hundred $$.
Remember that if it has been sitting and needs new tires, chain, hoses, carb overhaul and then you want to add panniers, skid plate, better brakes, lights, crash bars, barkbusters etc... that all adds up to a few thousand $$ and it might just make sense to buy a new bike or a later model that someone has already farkled out.