I have read your solutions and also looked at the prices, not sure why you'd want the VESA Mac just to put it on another stand when all you really need is a higher chair 😀 but i thought id toss my plan in too and see if it helps. I just bought a VESA iMac with the Bretford MobilePro Adjustable wall mount. My desk is in my room and I wanted to hang the the Mac on the wall to work as one would expect and also pull it out to put on a flick in bed or something. I had the same thought about the height because I don't want a stiff neck staring up at a screen, but technically I choose where I hang it so if its too high it would be my fault- it tilts but it doesn't move up and down Ill have to factor that in when I see where it will lie on my desk, but i intend to hang it low where it probably would have sat if it were on a stand.