You do not have to do this but it helps a whole lot. I do it for about 3 cycles (100 days is 1 cycle). Otherwise it will seem impossible to make money. Especially if your are not used to the game yet. This is somewhat time consuming. But I think it balances out because of the time you save not worrying about randomly getting blown up. Also this gives you a chance to get a decent mech and AI right from the start. It also helps out if you accidentally delete your save and have to start over like I did.