There's no real proper order to the ingredients, you can put them on in any order. Each pizza can hold up to two of each ingredient (if you have two that counts as "extra"). You lose a lot of money for ingredients that are raw or burnt.
get do'h and smash it, mass stack fans to produce a ton of pizza slices and then incinerate them get every topping and prepare it, put it in a comicaly large mixing vat with more fans boom, 500 bilion pizza slices to be thrown into the bottomless truck of doom and capitalis