No it is slightly less performing, but also cheaper in which case for a tide you over card it'll do fine while not costing too much.
You need either Windows 7 or 8.1, doesn't matter one. It's a disc that holds your operating system and a license key. It will cost you 100 bucks which I did have planned for in the original system I linked but since you don't have your full 950 you quoted you'll have to just wait until later.
You don't need an SSD now as I linked a 1TB HDD. Honestly you should just wait until you have all your money. Don't be impatient as now you're spending more money just to be impatient.
Ok, well I may just wait some more time. Also I just need to know what CD drives are compatible with my setup, you know any?