alright so ill be buying a new top of the line 15" macbook pro in two weeks as i am selling my white macbook while i still can. im already planning to add an ssd and buy the data double optical bay from OWC. but i have a few concerns... 1. which drive should go where? i was thinking putting the SSD in the normal HD slot, will this allow for 6gb/sec? 2. how do i find out how much space my OS and applications are taking up? im trying to figure out what size SSD to get. 3. does running these dual drives cause a loss in battery life? 4. i produce music and such, would it be smarter to keep the 5400rpm stock hard drive for cooler temps and more battery or get a 7200 rpm like i planned on? will it make a difference for speed? also should i get a HD with the g shock sensor in it since it will now be in the optical bay? or does apples sensor still work for this? 5. is there any concern with putting the hard drive in the optical bay regarding heat? since the optical bay is so close to the heat sink? 6. what is a good usb external optical drive enclosure for a MBP? thanks for any input!