During my design phase - I set it all up on a bench and checked everything against the design in Sketchup.
Doing an ergonomic walk through was worth the effort.
From my original design I changed:
- Angle of CP
- Height of screen
- Angle of screen
- CP layout
I think the height of the CP was the only thing I got right..
Worth doing a mockup and play your favorite game to make sure it feels right..
*** I'll add - I played Centipede for about 2 weeks too! Each adjustment I tried for a day or two to make sure it was not a snap decision... ***