The race place will be stocking parts, but seriously though i would think twice, even jez is trying to put you off and he owns a shop. Please listen to what people say, faster gear will not improve your driving it will only highlight your faults
Do you want to look a tit when you turn up with your shiney new gear and get blown away or put it in the wall.
Stick with what you have and buy one piece at a time and identify what will make you quicker.
I saw you on sunday and you were using some random tyres, smoked at least 1 speedo, and seemed to struggle when it came to setup. (Everytime you came back from a run we got high
)
Learn to walk before you run.