While I am not new to RVing, I am new to planning long trips. My husband and I thought it would be fun to take our 3 children and black lab on an extended RV trip from CA to Washington D.C. in our 34' motorhome (we will probably have a different opinion when it's over!). We were thinking of doing this in July. Two questions - Is a month long enough to go from CA to Washington D.C. and stop and see things along the way? Does anyone have any must sees to include in our route?