Trying to plan one epic family road trip right before my oldest leaves for college. We will be driving a minivan, leaving from OC, NJ in early August, and want to take possibly Rt 40 (southern route so we dont retrace our path on the way home) to Grand Canyon, then up to Mt. Rushmore (possibly including yellowstone) then back home with a stop in Pittsburgh, avoiding Chicago. We are trying to do this as time efficiently as possible, while still having stops for little fun things. The best hotels for us are two double beds and a pull out sofa, free breakfast (we can do some serious damage, they are good at eating a big breakfast), and a pool so they can run off steam after a long day of driving. Single parent, Kids are 18, 13, 8, 4, and 2. Any and all suggestions about fun stops, good inexpensive places to eat, reasonable amounts to drive each day, affordable but nice places where we could stay (esp. near national parks), etc. would be so appreciated. We would be on a very tight budget, so cost is a concern. Really need some experienced guidance here. Thanks!