I have been cruising with my kids, now 12 and 14 for the past 4 years or so..
I agree with everything Faster says above.
In particular, I agree with the PNW as a great place to cruise with kids. Lots of things for them to do and places to see. Everything is close together and, for the most part, kid-friendly.
Lots of safe small towns/villages, where you can let them run free.
If you decide on our area, we'll help you out with specific advice.
Cruising with kids is great family time. Don't miss it!
1987 CS 36 Merlin "Kyrie"
"They drove a dump truck full of money up to my house. I'm not made of stone!" -Krusty the Clown