Hello fellow gst owner. you dont need a battery cell unless you are going to use the roto starter. at first you wont be using the roto starter so you dont need it. instead get some gloves and a extra few pull starts. you will go through them because the compresson of the engine is so tight and new. i went through them. now i dont have to but its always good to have an extra one of those. fuel i am using odonnels 20%. did you buy the cen starter pack? it comes with the glow starter,fuel bottle etc etc? if not then you will need to get a stater pack that consists of the glow charger,glow plug ignightor,the allen wrench. get the ofna fuel filter its always good to have right from the start. break in should be done as the directions tell you how to break it in.