I have been pc gaming before pc gaming was a thing and never got into any of the crazy dual/triple monitor high resolution mainly because of 2 things:
2. When resolution> 1080P thats where you have to put in that extra PC love. Keeping drivers UTD, drives clean, monitoring temps, etc. to maximize and maintain settings.
I currently have had a Samsung 27"(1080P max) for the last 2 years and would highly recommend, however:
1. My office/ PC gaming room only has 1 window in which i have it Gerstamnned(blackout)
2. Only 1 HDMI input.
3. I have it sitting on a book(Office 2007) which is pretty thick because the stand doesn't adjust.
If you are not into all the bells and whistles of a PC i would stick to a single monitor and spend the extra on a pair of Astro A50 wireless and you will be all set.