Beating the life back in a dead horse...sidecars?

[mainlinecoffee]

Does anyone here run a sidecar on there daily ride? I am trying to enter a bike show in 3 months or so and I am trying to set one up. I am thinking about running a 20 inch tire off the front of a 70s enduros suzuki on a triangular ish frame with a beer keg body, just something for storage and the occasional ride with my elkhound derpy...the whole thing will probably be welded up by a buddy the next town over I just wanted to get an idea if possible from people that run them what should I take note of? Tow camber castor? Mount points? Weight limit? I'm shooting for 45-65 pounds... Any feedback would be apriciated.