WP_YAW_BEHAVIOUR for quadplane

Hello, I am working on a fairly large tiltrotor quadplane where the two front motors tilt. I want this plane to fly an automatic mission, but am struggling to find an easy way to make it head to the waypoint it will fly to before transitioning. This risks the plane transitioning in a different direction and then immediately making a turn, which could lead to it flying into an area where it is not supposed to. Is there something like WP_YAW_BEHAVIOUR for quadplanes? The only option i have found is the CONDITION_YAW command but that would require manually checking the heading of the transition waypoint and then manually adding that command to the mission. Is there another way to achieve this? Ideally I would like to fly up with weathervaning, then yaw to head towards first waypoint and transition.

Thanks in advance!