I would head straight for Clarksville on Friday and spend as much time as possible North of I-40. I avoid Hot Springs even though it has some cool stuff. There is just WAY too much traffic in the area, especially of the slow moving hard to pass variety. AR 7 North of Hot Springs can be particularly bad. I would also stay in Oklahoma as long as possible before cutting East. US 71 between Mena and Ft Smith will have a lot of traffic and few passing areas. AR 28 and 80 running East toward Danville aren't too bad. Most of the roads on the maps on your links that have the rectangular boxes will be unpaved but maintained gravel roads, but not all. Some are paved and some are barely roads. Generally, those with the thicker lines on that map will be well used and maintained, paved or not, like 18 between AR 80 and 10 just South of Waveland.
In recent years, there have been many new hotels built in Clarksville. There are still some older and cheaper hotels though. The last few times I have been there I have stayed at the Holiday Inn Express. If you want cheaper and not quite as nice, the Sunset Inn, just up the road a bit will do. That is where several Texas Adventure rallies were hosted in years past. You can also get gas right in that area. There is a little Mexican food place in town, on the corner of AR 103 and US 64,
El Molcajete
101 S Rogers St
Clarksville, AR 72830
Excellent food and not expensive!
From Clarksville, you can easily spend three days riding different routes out and back each day, or do a three day loop, staying in a different place each night, then coming back to Clarksville (or somewhere nearby), before heading home the last day (assuming a 5 day trip instead of 4). There are TONS of gravel roads in the area suitable for your AT.
The real challenge planning routes in this area is NOT finding good roads. It is deciding which of the MANY good roads to leave out of your route because there isn't enough time to do them all. It will require a LOT of trips to really explore all of them! Years ago I headed up there for a three day weekend on a VFR 800 and tried to ride every single paved road in NW Arkansas as possible. I was cranking out 500 mile days and stopping very little while riding a pretty brisk pace. It was a superb weekend of riding and I hit many fantastic roads, but there were still so many I missed... Ride a dual sport and it only magnifies the problem
Keep in mind that if you are not used to riding long days on twisty roads, your concentration will start to fade in the late afternoon. I used to lead group rides up in that area and I saw this every time. Around the 250 mile mark or at about 4-5pm, people would start getting sloppy with their cornering. The twistier the roads you ride, the worse it gets. If it is hot, that makes it worse yet again. Staying hydrated and taking frequent breaks (every 1 to 1-1/2 hours) will help a lot. Cell coverage is spotty in many areas, especially on the unpaved roads but even on the paved roads, so ride appropriately.