You really need to work on the balance between your power supply and other components, 1000w is ridiculously overkill for any single GPU system, to put it in perspective a 750ti based PC is happy with a 300w PSU. Not only does an overspecced power supply cost money, it will also run inefficiently and waste power (A PSU works best at over 20% load, your system won't come close to that).
You should drop the power supply you have down to a decent 550w-650w unit (Something from XFX would be a good choice) and use the money you save to get a better video card like a GeForce 760 (The 750ti is a pretty basic card).
I would also recommend moving to an Intel Core i5 based system as this will generally be better in most situations, especially gaming.
Also look into an SSD, possibly at a later date.