I have a late 2009 27" with 1TB installed. Running W7 via bootcamp. Lion installed. I also have a 2TB ext via firewire 800. Plus a 1TB external via USB 2.0 that I use to CCC every few months. I'm going to add to or replace the 1TB with a intel 320 160gb. Since I'm not really hurting for HD space, is it easier (install/setup) to just replace the current internal 1TB? It appears from what I read its a few less steps to get to the internal HD, then it is to get to the superdrive. I guess the temp/fan sensor is also an issue? If I remove the super drive, I can use the sensor from that for the SSD? Also I dont have another good copy of W7, so I will clone that partition and then install it on the SSD or will that boot from the external? How much space will Lion take up on the SSD. I think right now I have about 30 or 40GB for windows. Thank you very much for your time!