Bill,
You might also ask your dealer for a parts-only quote and let them know that you think you can handle the labor on your end. After all, you're unlikely to hurt it worse than it already is, and learning a few things about the engine would be cool.
If you get a full parts quote, and then post up the parts here (not prices, just parts) we may be able to help save you a few bucks by using good quality aftermarket parts that will fit. Might even be able to squeeze a little "go fast" in there, depending on what the laws are in your area, and what you want out of the bike.
Or, if you're comfortable taking the engine out yourself but the tearing down the engine is a little daunting, you could get a few quotes based on you dropping off the engine and the parts at whatever shop. It's going to be cheaper that way for sure. I would try to stay friendly with the dealer - after all, you bought your bike there... but let them know your intentions as well.
~Josh