Sounds complicated. I agree with applying downforce directly to the unsprung weight.
I just think it should be a mass free to slide fore-and-aft. Stupid simple. In fact I was thinking about pointing to the Deltawing config as a trimaran.
http://i.wheelsage.org/image/format/picture/picture-medium/nissan/deltawing_experimental_race_car/autowp.ru_nissan_deltawing_experimental_race_car_2 5.jpeg
60s gassers used to ride nose high to get weight transfer off the line. You could have a Delta wing configuration where the front nacelle shortens to put weight on the drive wheels and then lengthens for longitudinal stability as the acceleration slackens.