Look, I was a total noob until about a week ago. I never worked on a bike in my life. I did my research, asked a lot of questions online (even found great instructions for jetting my bike with pictures and everything), and then I did it myself. Maybe I can save you some time.
First, get the full exhaust (check ebay), save up if ya gotta. Buy it right, buy it once. Installing the full exhaust is simple.
Second, jetting the carbs seems like a bitch, until you do it, then it isn't so bad. Find a forum for your specific bike make/model, and I'm sure there is a how-to section, and/or links. If you still don't think you can do it yourself, then get someone to do it for you. Dealers are a ripoff for this sort of thing. Chances are, someone you know works on bikes, or he/she knows someone else who works on bikes.