No problem! Maybe some body posts, too, if you decide to flip your car often ;-)
Oh yeah, an onroad racing air filter with an INS-BOX is something to consider, too. Insbox prevents the dirt being pushed into your engine on high speeds. It will also keep your filter clean if the track isn't. This depends on your track conditions naturally.
Stock tires are not suitable for racing, get Ipanema's or GRP's instead. Alternatively GT foams and some traction control additive, that should give you an awesome grip