I'm sure you'll have a blast with the rig. I fell into sidecars about 19 months ago and love it. I hope I didn't come off as too much of a Chicken Little. I guess I should have just said that I'd go for a leading link instead of spending any possible extra money on things like a set of easy steer triple clamps. After about 10,000 miles on a rig I can say that it certainly does put a lot more side stress on a front end compared to the few forces of leaning a bike into a curve.
Best of luck with the rig and everything else,