So I plan on buying a 15 inch mbp in the next couple of weeks, but I had a few questions before I do. I want to have a ssd for Mac os and applications, and a 750 or 1tb drive for everything else. Question is, should I order tr mbp with the Apple installed ssd and put the hdd in the optibay? Or should I buy another ssd instead? Also, which location is better for the hdd. The hard drive slot or the optibay, or does it matter? And can you boot off the drive in the optibay slot??