Most chips, caps and resistors are in place on the back of board. Fixed a few solder bridges/one missing resistor, and now I can talk to the CLI via the FT231.
Basic Z80/SRAM functionality looks good. I was having problems writing the flash memory, but that was just software - the flash initialization code was commented out lol.
Ready for WiFi-related parts (arriving tomorrow?) which will let me test the ESP-01 interface. Then I'll populate the front of the board, print a case, add a battery and see how it works :)