1700 would be good for that and streaming if you want to do that :P

The thing with editing videos is no matter what CPU you get, there will always be room for improvement. The question to ask is how much you are willing to spend on the new setup. If you want to bump it up from your old (and slow) laptop setup, then a 1600 will be great. But even after your new rig, you'll think in the back of your mind, what if I went with a ... (next step up).

Also keep in mind the 2x00 are about to drop on the 19th (?) so a 2600 or 2700 might be worth waiting for.

compared to that laptop you are going to be amazed by the speed of everything. I'm sure it will feel like night and day once you get everything up and running