Driver circuit is based off Zach Armstrong's DRSSTC driver (which itself is based off Loneoceans's SSTC 2). I've redrawn the schematic in KiCAD. I altered the switch to turn off the internal interrupter when the external interrupter is enabled. I reused the GDT footprint off Zach's design. I changed the PCB design to remove all direct wire-to-board connectors from the original PCB. I added room for barrier blocks and terminal blocks. The PCB also removes the fly wire from the original design

Next step is to complete the coil calculations