Hello, and welcome to the forum. Just a few toughts,
after 25 years driving without major problems and almost no maintenance
... this is the result of not taking out more power than the parts are dimensioned to bear over with, combined with a good rider (and some luck!).
If you increase power, chances are reliability goes down, and all sorts of problems
may arise, the carb may need rejetting, idle problems, wear on critical parts may rise drastically, brakes are not up to the job etc, so IMO stick to original configuration (and get a second bike for harvesting speed tickets
). My opinions only.
btw unless totally worn down or bent, cam can be refaced, together with cam followers. Check with SRM or any other well renowned machine shop.
Regards
E.