What's the Yellow Book- you mean telephone directory?
I don't think a leading link front end will prevent you from lifting the sidecar in a right-hander. That is dependant on set-up and weight. Actually, carrying ballast (passengers are ballast) makes the rig safer by adding weight. The height of the bike, extra strong shocks / springs, weight of the tub, and distance from the bike all influence the stability. The main thing is knowing your rig and your ability- knowing how much to SLOW DOWN before entering the turn. (I have a suspicion that left-handers are harder on the forks than right-handers)
That said, forks undergo more twisting and lateral forces than a solo machine. Leading links are stronger and help keep the rig steady.
HOWEVER- I would want to know how the tub is attached first. It may be better to invest in a subframe first.
LOOK OUT IT'S COMING THIS WAY!