Hi
Its the old story with IT
The more you pay, the better you get. Do you need it, is usually the question.
For what you are after I think an I7 would be over kill unless you are either have the money to spare or are a heavy user.
SSD are fast, yes it would transfer faster using one but when you copy the RAW files off a GoPro and start creating projects with them, they get really big really fast.
If you look at the spec's it also says it will run on a Intel C2D and a 5400 spin hard drive.
So it really comes down to budget.
I would probably go with a customised
http://www.novatech.co.uk/pc/range/novatechblacknta18.htmlHave the SSD taken out and replace it with another 2-4TB Harddrive.
The card already supports OpenGL and the rest is more than powerful enough to last you.
Don't forget you need to add in the price of Windows 7 or 8. I would recommend going Pro over Home, it just means later if you start increasing the memory the system can use it.