it should be all compatible as its designed. The system will be solid, as i said before cant vouch for the brand gfx card and mobo though, id go with something else if it were me.
I cant tell what psu u wanted as the combo u linked isnt valid anymore.
This i would highly recommend:http://www.newegg.com/Product/ComboDealDetails.aspx?ItemList=Combo.506265
work the system around that combo deal; when you do the math its roughly $40 bucks more for the video card. This card is Significantly faster than the 5770 and will play pretty much all your games maxed out. EVGA is top brand and later down the line when you want to upgrade these cards in SLI are fantastic they actually out perform even the 5850 in SLI (read the reviews).
just my opinion, good luck.