If you are more interested in video editing then stick with the i7 because video editing and stuff uses more cores right? I'm getting a 7870 gpu and it sounds wonderful. My unprofessional opinion is to stick with what you have. Except, get an aftermarket cpu cooler. The hyper 212+ is great and is only like 30 dollars. Also, is a 500gb hdd enough space for video stuff? I really don't know but if it sounds like it might not be enough then you may want to invest in another 1tb drive or something.