I am sure that the mix of ruddrer that you propose would definitely add some pitch authority. But just for giggles there is one other approach that will work that has not been mentioned provided you have fixed gear and that you did not mention.
Changing the aircrafts CG is not a reasonable option in my mind and that's the last thing you want to do. On the other hand moving the main gears footprint forward is a reasonable thing to do if they are non retractible. Anyway I have in some airplanes I have fabricated a simple leading link or trailing link to move the footprint to where it was needed. I suspect an one inch forward move would offer you an airplane of an entirely different character with good rotation and the same good in flight chacteristics perhaps without the need to remember which switch you needed or which flight condition or whatever.
Just a thought dunno
John