Thanks for the replies.
I'm really pretty happy with the bike overall and it currently only has about 7800 miles on it.
But, I bought the bike used and I have no idea how well it was taken care of. The chain looks less than great. The tires look like they were run with low air pressure for quite some time (there's a little cupping on the front tire, not bad, but you can see it if the light hits the tire just right). The oil was low when I got it. Just signs that it might have been neglected some. But I got it for a great price, so I'm thinking I can afford a couple of upgrades.
My main thoughts were to put a Holeshot, Yosh, or D&D can on it, maybe a K&N air filter, check the jets (it runs sooo good, I wonder if the prior owner might have already rejetted or at least shimmed it), and change out the chain and sprockets.
I already love this bike and have a really hard time keeping the smile off my face because I ride it so much. If it had a bit more power and lot more punch...