Chris,
What’s the exposure totals of your data set
Ha = hrs ?
Oiii = hrs ?
Sii = hrs ?
If your data set and weightings are fairly balanced ( within 10% to 15% ) then to create a HST palette with those golden hues ( dominant ) and blue hues , you just load Sii into R channel , Ha into Green channel and Oiii into Blue channel ( typical SHO Hubble palette).Depending on which software you use you may have adjust the the channels ( back off the Green and/ or Blue to bring out the golden hues. Alternatively you could try a HSO palette which should also bring out those golden hues and less Blue / Green Cyan.
I use Startools which automatically maps your data set based on weighting and selected presets in SHO , HSO etc… very intuitive and effective. Once you jump into the colour module all the leg work in the background is done and you can select endless narrowband blends which can be tweaked to taste.
https://www.startools.org/modules/composite
https://www.startools.org/modules/color
Cheers
Martin