Have to agree with you on lowering the monitor. You can do away with the shelf if you add a board to the back of your monitor using the vesa mounting screw holes. Then the board is attached to the sides of the cab with cleats or brackets.
Yeah I thought of that. I even managed to make a tilting vesa mount out of an existing vesa mount i gutted from another old monitor that died on me a few months ago. My issue is that I'm still a stupid n00b when it comes to wood working. My original idea was to follow the dimensions exactly. However, what i quickly found out was that it seems this cab was nothing more than concept art and there are FAR less instructions on how to make this cab than there is for, per say, a weecade. With that said i felt this was a safer bet considering the few cuts involved and such few curves. I actually finished building the basic frame sans the back panel yesterday but i felt it was way too wide. All i wanted was a small experimental single player cab. Shortly after those pics were taken, i shaved width down from 20 inches to 17 and felt compelled to go down to 16 but i realized i needed space to work the monitor and some other electronics into it.
I just finished going into the back yard and using a chisel and rubber mallet to remove the monitor mounts that i set up and lowered them roughly about an inch down. I also noticed that the control panel on the plans are ridiculously long. Roughly 10 inches from the base of the rest of the cab. I may shave that down a bit as well.
This project is really nothing more than an experiment, just for fun. Hence the DERP name on the cab.