first off, welcome to HQ bro!
i would run klotz premix at 40:1. stay away from yamalube as that stuff is junk.
i would ditch the boost bottle and get a stock crossover tube to put back in there. the boost bottle does nothing for performance and clutters up the engine area. you can get one for next to nothing from NYUK here on HQ.
check your outerwares for dust and dirt. while they do keep stuff out of the filters, they can plug up so bad that your bike will starve for air. i actually recommend taking them off entirely unless youre only riding in the sand.
as far as bottom end and midrange, you will probably need some porting done to really notice any major gains.
check with the site sponsors when it comes to parts and stuff. they offer great deals, are some of the best in the industry and its also a good way to give back to the site.