Giovanni
Do you want a best strategy button? I don't understand your suggestion. You are the player and you have to do your best in order to win. If you want everything automatic, where is your role in this game?
Anyway the setup is just a minigame inside the game. I'm not 100% sure but it influences the qualifying only.
Set up influences the actual race as well, but it is just a small part of what the Manager needs to do to be successful. I think you hit the nail on the head by making the OP aware of the need for interaction as that is the whole point of the game.