Nice re: the suspension.
Lighter wheels will definitely make a huge difference. I'd stay away from carbon fiber though. Some magnesium or maybe some used HP4 wheels (that would undoubtedly be popping up on eBay in the near future) will be the biggest upgrade you can make, in terms of handling (since you have upgraded suspension).
What about the the steering damper? Is that upgraded also? the stock one is..ehhh...
Carbon bling won't make the bike faster. If you replace all of the fairings with race carbon (thin), you'll save a few pounds. But the rough estimate is for every 7 pounds lost, you gain 1 horsepower. That equation is pretty close. I think it might be closer to 8 or 9 pounds. But, I'm sure a quick google search can figure it out.
Then again, loosing 7 pounds of weight from your body is the cheapest way to go. MotoGP guys are 135-150 lbs. for a reason. Rossi is like a twig. Then again, if you do loose the weight you may have do have your suspension rebuilt. But, it's still the cheapest way to gain h.p.
Have fun man and welcome to the forum. I'm jealous! :-)