With multiple families, be prepared for what will happen if someone breaks down. With multiple rigs and lots of miles, odds are someone will have a mechanical issue along the way.
This creates two conflicting issues...if you need 4-5 sites, particularly at busy locations, reservations are important but if you get off schedule, do you lose your reservation.
PS: Travel Agents would love to plan this for you...you would likely baulk at the price and conditions. To do a decent job would be a lot of work and a lot of risk when you change the plan on the fly and then come back to complain that they couldn't get you in where you wanted.
