Uhhh, we have a design problem. I have been on 3 wheel motor cycles and they are not stable. 110 MPH on 3 wheels, not only no, but H/NO.
Three-wheel vehicles are unstable when the single wheel is in front. Where there are two wheels in front, and one in the back, they are very reasonably stable.
Check the Can-am Spyder.
Your are correct the arrangement with one wheel forward is highly unstable. Two wheels forward is very stable unless traveling in reverse or in a spin.