I don’t believe that silenpcreview has a very good list of PSUs. The ranges used are too wide, too few options are listed for such large ranges, and many good PSUs are not included.
The Fatality 700w provides a lot more power than you need even with your possible upgrades. However, a good option is to keep it and, for just a few dollars more, get a mob that will let you Crossfire later, thus substantially increasing gaming power by just adding another graphics card.
I would not get the mobo you selected – why get one that is engineered to support AM2 and AM2+ sockets when you are beyond that. Also I prefer the Gigabyte UD – ultra durable – boards.
http://www.tomshardware.com/reviews/gigabyte-ultra-durable,2094.html
If you want a single video card slot, I recommend this one for the same money:
GIGABYTE GA-MA770T-UD3P AM3 AMD 770 ATX AMD Motherboard – Retail - $70
Winner of Customer Choice Award - AMD Motherboards
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128392
But better to get this one if the budget allows:
GIGABYTE GA-MA790GPT-UD3H AM3 AMD 790GX HDMI ATX AMD Motherboard – Retail - $100
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128398