I capture my footage from either the Flip HD or Contour HD helmet cam. I have been using powerdirector up til this point. I am looking for a new system that I can run a program like premiere or vegas pro. What should I be looking for in a new system to support what I do? i5 or i7? how much ram? anything else? Also, I want to keep it under $1000 but I'd prefer to be around $750.