Hello
Its a P35 board therefore you need to go with C2D CPUs which are out of production,so you won't have any good upgrade paths.
If you already have bought the CPU,then yes go for this motherboard,its a mainstream P35 however it may not OC as good as other higher-end models
OH, then you're probably all set. The only OC limitation with that board is that you can't manually set the Ram timings. Since you're not overclocking, then you're pretty much all set.
Motherboard doesn't make a difference in games,the most important parts are VGA,CPU and RAM,so as long as you have a good combination of this trio then you will be fine