I am finally getting my nMP, and I am thinking of getting a second display to go with it. I already have an Apple Cinema Display 27", but it would be sweet with two monitors. Questions before making this additional purchase though; 1) Will I be able to control brightness on each monitor individually? 2) Can I put one to sleep, whilst working on the other? 3) How will I select the iSight camera to use in FaceTime? 4) One uses Thunderbolt and the other uses Displayport. Should I run them on separate TB buses on the nMP? Thanks in advance.