You have mapped out a wonderful road trip. I live near the Oklahoma end of the Talimena Trail. I've ridden it many times as well as Highway 7 north from Hot Springs. I would suggest staying at Queen Wilhelmina State Park, which is on the TT closer to Mena, instead of Talimena State Park. I've camped there a couple of times (when I lived farther away) and it is swell. There's also a lodge there that serves buffet meals. On the northern part of Highway 7 near Jasper, Ark, there's an elk herd which can occasionally be spotted (I never have, but c'est la vie). Highway 7 is still a very nice ride, but a few years ago so moron decided to widen it, so the curves are a little less curvier, but it is still a breathtaking ride. I have camped on Mt. Nebo during a "Fools on the Hill" rally which happens on the last weekend of winter. It is so freaking cold then. I suspect this time of year it would be wonderful. The ride up Mt. Nebo has several switchbacks. You could also swing by Harrison, Ark. on your trip, which is the home of David Duke.Otherwise it is a nice little town. If you end up doing the TT on a weekend, let me know and I'll try meet you on whichever end you want to start from and ride a ways with you. You also might look into getting a copy of Arkansas Riders Guide by Mario Caruso. It is a great resource and it is well written and witty as well as having lots of great rides mapped out. I don't think you can go wrong on this trip. Sounds like you have done some research and excellent planning.