I bought acer k272hul monitors which have a symmetrical bezel so they won't need to be inverted. The onscreen controls are on the front face of the bezel instead of the bottom edge. That's the factor that finally contributed to me trusting they were the best solution for me (at $400). Their marketing and engineering depts. obviously got that part right, the bezel and OSC.
They have a secondary display port that's an output that's supposed to pass dp signal to a second monitor. Multi stream transfer (mst) is limited by resolution and in my case 2560x1440 it's maximum of 2 led's per cable. Monitors come with dp cables but don't specify the version. MST requires dp v1.2.
I bought a visiontek 7750 which has 6 mini-dp outputs but only comes with 4 mini-dp to dp adapters, so I need mst to work (without increasing lag?) or I have to buy more adapters. It's not clear, but I skimmed some info stating mst might be limited to only 2 cables or ports but now that I think about it that is still enough to drive 4 led's and the remaining 2 adapters will drive the other 2. I'm cutting costs here if I can but if I misunderstood something or I don't get the results then extra adapters are necessary.
If I did my prototype monitor height analysis correctly then my led's won't be slanted, as this is necessary to solve the gaps between bezels. Monitors are 15" tall so that's 30" to the very top, with no loss of color due to angle of view because new spec is 178 degrees from all directions. Neck started hurting a week ago when I began experimenting with this idea.
Vid card and monitor stands coming Monday, led's Tuesday. Been thinking about doing this for a long time. Finally, done.