Don't buy gil to start the game man. First off, you don't have enough fg to buy enough gil for anything. Second, you can only either buy your way through turn clears (1-2.5 mil per run in 2nd coil) and that doesn't help you. The only thing it'd be good for is buying 110 gear as soon as you hit 50 so you can do higher lvl shit, also isn't going to help you unless you can clear T5, which you won't be able to for awhile. If you wanna switch over to Gilgamesh I'd be more than happy to help you out but Gil isn't going to do anything for you, especially not with how much fg you have. 1 million is like 800 fg and that'll buy you like one piece of shitty 110 gear and it won't even get you a clear run for any of the turns.