I am looking to buy an iMac 27 but I am unsure about which upgrades to make. I know that 8GB of ram will be fine for now and that I can update it later. However, I am on the fence with the 1GB vs 2GB graphics cards and the Fusions drives. I am not a huge gamer but I would like to be able to play the new COD and Battlefield 4 this fall (bootcamp). Any ideas?