Have lots of time to help with this, I've been subbing without playing for the last year+ waiting for this day - news of Alpha or Beta.
I've got 3 PC's, one older HTPC with an early i7 and 5770 video, i7 3930 w/2 680 in sli, i7 3930 w/ 780ti and 4k Asus monitor inbound this week. I too like others ran 3 screens, but am back to 144hz single and the new 4k monitor once it gets here. If needed I can pick up another 144hz 24" and go back to 3 screen for testing purposes. I also have an Asus gaming PC that is about 6 months old and current tech so far as vid display and cpu/drives.
Picked or not, this is great news, again, I've been waiting to see the news light up with a new post announcing progress like this. Can't wait until the day the beta arena opens.