[Neil de Guzman]

Looks nice mate! Especially without wires... I tried some scrap wood in the past to pull off something like this. Everything looks good on paper until wires ruin everything. One thing you can consider is building a rig against the wall, but instead of attacking the wheel mount, just try to make the seat removable, preferably with wheels as dual purpose office chair style, moving around seat 'round the room/house... Everything stays in place against the wall, wheel, monitor, everything.