Nice runs Hallow! That's about right on air cooling. The KPE's don't "feel" like they OC well, but in reality are very good!!! See how your real clock is 1306, when gpuz shows 1176! Precision is accurate.
You can do 1.5v on the cpu on air. It won't hurt it.
What voltage on the Video Memory? I got mine past 2000(4000) with not too much trouble.