Sounds like a good deal.....is the i7 worth the cost over the i5?
The i5 vs i7 debate for lightroom is still kind of.... umm... lame? The only time in Lightroom really utilizies the cores/threads is during import/exports. But during actually usage of the program it's very minimal usage. It's even better to have a single CPU that's overclocked than to have like two xeon processors.
If you look at the i5-4670K vs. the i7-4770K strictly from a standard computer user POV... They are near the same CPU but the i7 is $80 more. The only reason why I'd consider using an i7 was for something that utilizes hyperthreading, video renderings, etc...
But Windows 7 is an EASY program to use/learn if you're technically inclined and have the time. I have my computer so well maintained/protected, I never had a virus/malware on my computer etc... Or you can go the route texkam said which is even more 'nerder'

I do like the options with Cyberpower.......they back up their product too


