Steve- Nicely done! Great bike too
A few weeks ago, had the grandgirls all tuned on their fat tires with 50 psi.. The mighty mites can GO and the distance! They love it when I take them out. No whiners with me

Prep with plenty of water, snacks, pick an interesting route (no long distance straights) and mostly teach them to pace themselves.
Only if they show genuine interest or responsibility, then that's the time to step up for them.
For the youngsters, nothing wrong with big box 40 lbs. steel frame, fat tires. $100 bikes will get trashed, dropped, abused and eventually handed down or donated. Why bother with anything better as they bang them around with other kids and bikes, left unlocked at parks. Even if one finds a used quality JR racer, makes no sense to let them have it unless they fully understand it and value.
Ps: PM me for fun Sat/ AM group rides. Three levels of riders and routes - no one left behind.