[Dragonfly DIY] Using standard software with the CTC printer

I prefer to use Slic3r to generate the files to feed into my printers. My current printer is a CTC which unfortunately uses a clone of the Makerbot electronics, and as such doesn't use standard GCode files (and has other significant shortcomings which make it feel extremely primitive to someone used to Marlin).

Anyway, I've been using it for months now, and figured I should post my current setup - it's a bit changed from what I had before. This is mostly a recap of what I've posted before.
( cut because, honestly, you don't care. )