Hey espy1949, welcome back to motorhoming—awesome you're hitting the road again at 76! Your route (I-10 W to US-65 N thru AL, US-22 W to Memphis, I-40 W to Little Rock) is a solid, flat pick for your 36ft Tiffin Open Road gas pusher. It skips the steep Ozark/Ouachita grades (6-8% headaches), sticking to coastal plains, farmland, and Delta flats—gas rig folks on iRV2 report cruising it easy, no major brake or power issues. You've got the experience from those first rigs—enjoy the trip and drop an update! Safe travels!