Your budget will not allow for a 970
You need a 1k comp to be at that tier
I just made these up, but i would say...
<$600 stuff comp, do not even game
$600 low end gaming
$1000 good gaming, it's better then console trash.
$1500 high end gaming
$2000+ extreme
And all parts fall into those tiers. But it's a bad idea to mix and match em. If you budget for a certain level of computer, you should only use parts that are meant for it. Not grab like a high end video card to run over a low end cpu