depends how much you want to spend
getting serious without spending any money increase the reed lift as much as you can (like 10-12mm) and bend the reed stoppers to suit it,
that and match the piston skirt at the bottom of the cylinder to the piston itself. they all seem to not have this done. ill put some pics up if you want.
but i think you really need a digital tach to gauge how well the jetting is (keep changing till you get the max revs. im not sure on the blatas but jetting seems to range from 95-105). that or read the plug. theres a few threads on it here.
BUT if you are taking it on the track get some PMT tyres. the chinese stockers are GARBAGE