Looks about right. You may be able to go down to 4GB memory depending on what you mine..
The only thing I would say is possibly get a higher wattage power supply - as you will be limited to the number of GPUs you can attach.. I use EVGA 1000GQ which are good - and is 1000 watts.
Well I misstyped it ,it is a 850 watt toughpower and it supports up to 5 cards but I will use 4 without problem. I have the final question before making the payments.
Any difference in SSD compared to HDD in mining, (I don't care about slow loading of the system) ?