Regarding the OptiBay swap with an optical drive - I have an early 2011 17" MBP and was looking into swapping out the optical drive. However, I don't want to use a SSD, but another HD. Would using 2 7200rpm (or 1 5400 and 1 7200) be too much heat inside the MBP? If so, I'll wait and go the SSD route later on. Thanks.