Best way to transport 4 y/o 3 miles home by bike
He has an islabike which he can ride as a balance bike with the pedals off. He's just about able to ride it with pedals on, but he's a bit reluctant to practice further still so hasn't fully nailed it yet. I have an old rim braked 8-speed hybrid with flat pedals on that I have the bike seat on, and my usual commuter is a Planet X London Road (clipless, disc brakes, no rack, but it has the mounts).
My current thinking is to get a FollowMe tandem and either get my wife to drop off his bike with him in the morning and lock it up for me to collect for the homeward journey, or alternatively I'll ride my bike to work with his IslaBike attached to the tandem. Then I'll move the rack from my hybrid onto the London Road and use panniers rather than my messenger bag on those days.
Sound reasonable? Any other suggestions?