Hello all. I'm currently planning to upgrade my MBA 13" (2014) to a 2015 refurb 13" rMBP in a few months. I'm mostly doing this so I have more power for the future, since I plan on using this eventually for college and possibly more intense video editing than what I do now for my YouTube channel in iMovie. I currently have 256GB, with 50GB free. Will it be worth it to get the 512gb model for almost $300 more? Main thing that will be added is pictures and video. Also, are there supposed/rumored to be new rMBPs released at the event next week? If so, will the prices of the 2015 refurb models go down? Thanks!