if your Doing the bottom end get the pancake and billett water impeller and shift star.
Think about doing end cut tranny mod, Yakkey shift drum, and 4 mill if you need a new crank.
What are you going to do with it? Almost every banshee needs a t.m. DesinIgs case saver and tors delete kit and leak down test rig ( use it ) and if you have a boost bottle go back to stock.
I would also do a plug chip to make sure the k&n kit is properly jetted
If you bike has ok pipes then move on to clutch springs then suspenison.
There is alot more but you said it is fast enough so get back when you want to spank 450"s