This is my personal Ergodox EZ configuration, and my daily driver.
Most of the code resides in my userspace and is heavily based upon Drashna's work... although considerably slimmed down.
Put simply:
make ergodox_ez:bocaj
On that note, I use a separate workspace when making changes to my layouts or userspace. In that repo, there is a tool that does this for me. See JacobJerrell/qmk_layouts/tools/
I don't have the underglow or backlit versions so the 3 LEDs on the right board are used for layer indication if not on the base layer. If you're on the base layer, they're used for mod-key indicators.