Creating Custom Gray Card/ White Balance Preset for Unique Lighting Situations

I found my church lighting a very non-standard combination of light sources.
This is SOOC JPG of my gray card Sun WB, ISO-1600, f/5.6, 1/50 second. Note the golden tones.              

After using RAW Develop with sliders for Exposure, Temperature, and Tint, this shows as a 'narrow' bell in the center of the histogram. Save as a Custom Preset for future use.

Example below.

SOOC JPG of my friend having too much fun!


My friend, a bell ringer, after applying the preset and a few other Develop tweaks.