I have submitted my PCB design to the fabricator. I am using EasyEDA which is based in China. I think they offer the best price, but they can take a while to deliver boards since they are coming from far away. They are the same price for 5 as for 10, so I orded 10 boards. This will take quite a bit of time to solder by hand, so I imagine only assembling one.

I chose to go with a black solder-resist layer even if that increased the cost slightly. I am not intending on having a cover, so the look of the PCB is important. I wanted the silkscreen to replicate the front panel look. I took a high-resolution picture of the front panel of the Altair 8800 logo and put that in the silkscreen too.