I'm going to purchase the new MacBook Air 13" tomorrow. I'm hoping that the Back to School promotion will start tomorrow. If it doesn't, I'm purchasing it anyways. I been waiting for it since WWDC 2013. Is it worth upgrading from 1.3GHz dual-core Intel Core i5 processor, Turbo Boost up to 2.6GHz to 1.7GHz Dual-Core Intel Core i7, Turbo Boost up to 3.3GHz? I'm planning to do some light gaming on it. Also will the processor decrease my battery life? The upgrade is only $140 with the Student discount. What would you do?