I may be jumping between parts of the project, but I want to test on real hardware.

I have the board about 14% routed at this point.  I used KiCad's 3D view to make this rendering:

I love that feature.  At this point we have decided on all specifications of the computer.

Our audio output is a 3.5mm audio jack with both right and left outputs.  They are connected via an LM358 to two FPGA pins.

The video output is a VGA output connected to the FPGA, which has 11-bit color. The video resolution is controlled by the FPGA.