Gigabyte windforce gtx670 + TJ08-E thermals

Hi, I would like to build a new matx computer. I was wondering if I would get good thermals on my GPU (gigabyte's Windforce GTX670 OC) with a Silverstone TJ08-E. "Good" being around 70C when playing games in 1920x1080 on high settings. I can get that card for 400$ Do you guys think I would be better off going with a blower type card or looking for another case? I'm a bit afraid there will be a dead zone on top of the card (TJ08-E is a reversed case) and it will make it overheat...

PC specs:
Corsair HX650W
Gigabyte windforce gtx670 OC
i5-3570k
Asus maximus V Gene
Kingston HyperX 8Gb
OCZ Agility 4 120Gb
WD Caviar Black 1TB
Asus PCE-N15 wireless card
Silverstone TJ08-E
Didn't decide on which air CPU cooler yet since I'm waiting to confirm case.

Thank you.