Unfortunately I could not get the ESP32 with RetroGo to work with a display of the right size. It just has to be a 3.5 inch display, or my Lynx won't look real. So I return to the Raspberry Pi 3A+ like in my previous project, and a MPI3508 3.5" HDMI Display. And yes, this just works. Insert the RetroPie SD card, apply power, and it starts. Not as fast as I would like it, but maybe I can shave off a few seconds later if I just focus on only Lynx Emulation.

The Pi + screen combination also makes for a compact building block that will be easy to mount in the housing.

This also means I can just wire it exactly the same as I did for the RetroPie Handheld. Making this project slightly less fun, but way easier to finish.