Where to cut redbud double leader?

Hi all, thank you for the great advice that it's ok to prune off the weaker branch in my redbud (https://www.reddit.com/r/arborists/s/m5RcTgpnfh). I think I'm going to take off the whole smaller branch this winter, rather than reducing it over multiple years to make sure I don't forget or something future years.

My next question is where should I make the cut, given the splig going down from the Y fork? Should I cut at the red line in the photo below, the green line (very carefully) or somewhere else? Normally I would do the red line above the collar flare, but I wonder if the long split changes things at all and makes the green line better here?

Thank you again!