I wouldn't recommend that AOC, its lowest brightness is 154 nits which is a really high minimum brightness level, and far too high for dark room viewing unless you had a strong bias light behind the monitor. I'd say the nixeus NX-VUE24A is a good choice, or the newer ViewSonic XG2401, however the Viewsonic only recently launched so you'd have no in depth reviews to go by, just whatever folks have commented on it on amazon after purchasing.
I agree with the NX-VUE24A. It is the only 1080p 144Hz FreeSync monitor with a verified and certified rage of 30Hz to 144Hz. Its available on Newegg for about the same price at the moment:
If you don't care for the height adjustable stand, the NX-VUE24B version is a bit lower price at Newegg too. It's also closer to your budget of $230:
I've read that you may have to lower the brightness from the default setting and tilt the monitor up a little to get the best viewing and color.