That looks somewhat like my set up. Mine is all wall mounted.
I tried that but I got a WINDOW behind the monitors and the Nails kept falling out of the glass...was thinking about nailing some 1 x 4 to the window frame...but Mrs. GRRRRR was a real SPOIL SPORT on that one...sheeesh, I can spackle them holes up with Colgate Toothpaste, just like in colledge...
No one let's me have any fun anymore...