Ok so you will be racing in the stock class then? First thing to do is get the right tires and put int he 9 tooth pinion right away. PN super soft for the ear and medium or firm for the front. Kit tires works pretty good too. Then next upgrade will be the MM2 rear pod that is like 10 dollars. Then read springs up front, cut and invert the front king pin. Get your self the kyosho carbon t plate pack and run the softest one. These things will get you most of the way there.
From there I would get the PN ball diff and 1 degree aluminum front knuckle and the plastic oild filled shock.