Thanks for the ideas. How does the steering geometry of a Tandem differ from other bikes? Longer wheel base, but is there anything unusual about the way they are arranged up front.

The service I have in mind is a front end 58, and the rear end to suit my various girls, three daughters and my wife. one at a time There are times when it would be fun to ride one together, and there are carpooling type situations where you need to ride the ride to one or the other of them for the pick-up. Secondary capability would be for a little touring.