Dropping weight on the CBR won't be easy on a budget. There are lots of carbon fiber parts available but they ain't cheap. Might start by removing the rear pegs and fabricating an exhaust hanger. Drill tasteful holes in places like the brake and clutch levers (guys will pay a lot of money for "custom" levers when all you need is a few drills), front peg mounts, lower cowl, fuel tank cover, drive chain cover. For larger holes use hole saws. Remove the grab rails, reflectors, clutch cable adjustment rubber and the silly plastic pouch under the seat containing an allen wrench. if you're not concerned with safety remove the turn signals. You get the idea. Don't drill holes in the frame or swing arm. You also might consider losing some body weight. No slam intended. Be careful. You can get really carried away with weight loss on a budget. However, "Performance" is all power to weight. Take your license but leave your wallet at home.