I don't see a P4-12V connector on that mobo which is recommended by both AMD and nvidia... So if stability is prime, that should be avoided. I'm hearing that the nvidia drivers are less stable than the current Via Hyperion drivers, so I wouldn't even use an nv based mobo.
. So, I would go with either the DFI KM400 based mobo or the Abit VA-10 (see my review
Here . And a compact case like the Silverstone SST-38LED (not easy to find, froogle for it) or the SuperFlower/TTGI SF-101 or TT-101 (from Directron et al.). Or one of the AOpen or InWin microATX standard mini towers for the more traditional. All have more than adequate OE PSUs for a mobo with the P4 connector.
. Also you might want to look at the Athenatech A100 (also reviewed at the link above) series for a bit more bling at a budget price (you may need to order an 80mm fan for the front as I'm not sure whether one is included - the dual 60mm rear fans are included)...
. Check the inWin or AOpen for HSF clearance - that HSF (of which I have several) is nice but pretty big - the others should be fine.
. If you must go with a full ATX mobo, then I would suggest the Evercase 42x2 series. One of the quietest cases in stock form per Silent PC Review and can be made even moreso by adding the HD vibe dampers you can oder direct from the mfr. And switch to a mobo with the P4 connector in any case.
.bh.