Look at this build;
ASROCK 990FX Extreme3 ~ 100$
AMD FX-6300 or FX-6350, if you do have the money go for an FX-8320 or FX-8350, but it is double the cost approx.
8 gigs of 1866mhz ram is about 100$ aswell.
The GTX 970 is an excellent GPU, how much is it in your country? Here I can get it for approx 450-500$, which is almost half your budget. Nonetheless, get a 650+ watt psu.
I would recommend an Inter-Tech Energon EPS-650W, I have been running with this badboy for 4 years nonstop almost, lol. Still going with no problem at all, it is very cheap, I bet you can get it for 50-60$
Just remember to get a midi/large tower for it, else you might get in trouble with space.