Hey no worries man
I bought i5 3570k. It has slightly better integrated graphics and is only a fraction more expensive but from what I understand both these CPU's will be able to run dual screen setup. Not sure whether your video editing will need a separate graphics card though.
Also. If you plan to use wireless check whether the motherboard comes with a PCIe wireless adapter card otherwise you have to buy one separately. I chose
Gigabyte M3 Sniper mobo because of this. It is also a mATX which means I can put it in a smaller case. I went with
Fractal Design Define Mini
You also need an OS. The number of times I forgot this when factoring in cost is unreal lol. It needs to be OEM version for new builds. If you are not using an optical drive like me you can use USB using
UNetbootin and an .iso file. I need to look into this more as I haven't done this without CD before but I have a friend in IT who will likely help and I'll be able to help you if you want once I have done it
Good luck with it. I have ordered and I am waiting on parts to be dispatched. I am very very excited and this has been so much fun so far. Unfortunately my Fractal Design case is delaying things as they are waiting for stock from their supplier. This is what you get when you order award winning Swedish design
Hope this helps