Yes you will be able to play all those games pretty decently!!
I was just saying that , if you haven't bought, then it will be better to get a 750(Not that 650 is not a good performer
)
GTX470 in SLI will dissipate a large amount of heat! But just make sure your case has good airflow and that should be enough..
Also Monitor temps while you play using software like HWmonitor