Sitting on three wheels now!
I had thought about having 0 toe-in, but I decided to use 1/4" to try to keep overall handling from possibly being a bit *too* "loose" or light or whatever for a heavy rig. Tomorrow I will begin making the plates for welding the sidecar suspension to the cross-tubes, and that means I might get to make my first test ride by the end of this week! I will still need to shorten the second frame and add the front "chariot bars" and the struts at the back, but I can take my very first hack ride ever -- Can you tell I am excited?! -- before having to finish everything.
He who so shall, so shall he who.