Is this really a "new" system as in these are new parts? Or is this "new" as in these are a combination of parts you have lying around and parts you'll get on ebay used? I'm showing one of those motherboards as deactivated at NewEgg and they appear to also no longer sell the Phenom X4 810.
The motherboard which is still being sold is a whopping $180. (Which seems very pricy for a DDR2 based board.) I also have concerns if that is actually compatible with the Phenom X4 810, as there were some compatibity issues with those early cores on some motherboards. (The whole 'only works on AM3' 'works on AM3 or AM2+' ordeal. It didn't quite work out as cleanly as AMD had hoped.) Pretty much if you are going with something new on AMD's side you want to stick with a pure AM3 build and DDR3. (Though DDR3 for AMD seems substantially more than Intel - ~100 vs. ~60 post rebate.)
If you truly are getting brand new, and are in the U.S., I'd say look at something more like the following for an entry AMD build (and if you were spending a bit more to simply go to an Intel socket 1156)...
AMD Athlon II X4 640
Patriot Gamer 4 gig DDR3-1600
Asus M4A77TD Pro
$80 post rebate (note due to the second slot speed I would recommend against using this as a crossfire board and sticking with single GPU)