To recap, you have a GTX 770, a 4570 CPU, and 8GB RAM.
The monitor is 1280 x 1024 unless you bought a 1080p monitor.
You can run ultra but you may not be getting the FPS you are looking for. The average is above the playable 30+ FPS but you drop below that on intense GPU usage scenes. (On 1080p)
If 1024 monitor, you should have no issue maxing out.