Hi everyone I ordered a 27 inch iMac with a 512GB SSD last week. It arrives this Thursday. I think 512GB will be plenty, but I realized that I could have gotten the 1TB SSD option. I will store lots of photos and some videos on the computer and export some movie projects in iMovie I don't want to use an external drive, and I will only keep the computer for about a year, or until the broadwell models come out. Photos and Videos will make up 90% of the things I store on the computer. What should I do?