The scouting is complete. There is a remote combination of dirt/gravel/semi-paved one- and two-lane roads leading from my house on the prairie all the way to Muenster, Texas.
Depending on what you might call "scenic", some of the route probably is. Some smooth roads, some rough. Some flat lowlands adjacent to creekbeds, some steep sections that climb out of the valley up to windswept ridges where one can see miles in all directions.
Not much in the way of services. There are, however, small farm houses in the middle of nowhere, guarded by big dogs that are more threatened by bicycles than pickup trucks.
There are places that are not much more than quiet.
As of today, the first 3 Saturdays in December are all viable options. I'll be looking for suggestions from the DFW group of Bicycling Authors, Bloggers, Bold-face Liers, & Exaggerators (BABBLE) on which date will work best.
The general plan (subject to refinement) is to depart my place around 8:00, ride roughly 40 miles on rough stuff to Muenster, pause for lunch, and return by pre-parked auto. If there only 2 or 3 of us, we'll use my pickup to drive us back. If there are more participants, I'll need help with the driving logistics.