Ok, so my current devices are my 4s and my iPad 3rd gen and I will be adding the new iMac when it released, whenever that is. So the biggest task will be the video editing for the iMac. My main project will be several videos and maybe even a movie will be shot about me getting in shape. Going from fat to fit, having a lot of action shots in the gym, out of the gym etc. kind of a inspiring documentary about what it takes to get lean and muscular. Will have a lot of action scenes with music so I will want to adjust music volumes for dynamic and take out any audion on certain scenes, just my random ideas here. So I will be filming all the video with my iPhone 4s and the new iPad, but this really is my first stab at video editing so I will be using iMovie. So my spec questions. 1. Do I need to upgrade the i7, or will the i5 be plenty for me? 2. Same with the ram, stock 4gb or upgrade to the 8gb? Assuming the 1tb sata will suffice here. I also do prefer the 27" screen, not a necessity, but I figure since I'm making the investment to get what I want. Any opinions are appreciated.