I'm going to be making my hubby a cake in August using a 11x15x2 inch pan (for the body) with the ball pans for the boobs, also doing a coochie in fondant (on this cake). How many lbs of fondant do you think I need to cover this cake? I've only done 1 cake in fondant and it was wilton (gag me to death) so this time I'm buying satin ice (which seems to be the prefered fondant with most people) they seem to sell it in 2 lbs, 5 lbs and 20 lb containers.