Falcon Heavy Simultaneous booster landings

[edwin.robert]

After perfecting my booster landing script over the lockdown period I've always wanted to recreate the falcon heavy missions with a double booster landing. Two years ago my method was to just use mechjeb but since it is nowhere near as accurate and realistic as the script I abandoned it and never went back to it. The problem is my script requires the impact position given by the Trajectories mod and since it does not give you the trajectory and impact position for the non active vessel, I cannot land the boosters simultaneously. I can do the boostback burn by making one booster copy another but it'll be of no use if I can't land them. Writing script to predict impact position on an atmospheric body sounds way too complicated and I doubt I have the time and skills for that. Is there any way to get the impact position for two vessels taking into account lift, drag and the rotation of Kerbin? 

[Vanamonde]

As this is not a suggestion for the game's development, the thread has been moved to the gameplay sub.