Too many miles?

Welcome! You do have a tough three days of travel. We have done that also. It is helpful if there is more than one driver. Just make sure that all drivers understand completely that if they are at all tired to stop, not surge ahead thinking they "can do it." One of the things we did a couple times, instead of leaving from home first thing in the morning, we left when DH got home from work and drove through the night. I would not recommend this for everyone or for a lot of trips, but when our goal was to put down a lot of miles there were some advantages to driving through the night. Fortunately when we did that we had three drivers so at least one was sleeping. Use this trip to evaluate how you want to proceed with future trips, there may be some that you want to put down a lot of miles some days and there may be some that you want to take it slow and enjoy each day of your vacation. Best Wishes and enjoy your trip!