never mind about the i5 then, get an i7.
Do you do editing for more than 6 hours a day? If not you won't notice any difference with that cpu. Those things are barely anymore powerful in practice. the only reason those cpus should be used for is professional purposes.http://www.newegg.com/Product/Product.aspx?Item=N82E16819115229
If you aren't a professional that is the strongest I would get.