If I were planning this trip, I would try something like this map.
View attachment 234720
Maypearl-Clayton NM 507 miles ~8 hrs
Clayton to Lake City 330 miles ~5.5 hrs
lake city to Ouray 136 miles ~3 hrs I would ride to Black Canyon of the Gunnison and spend some time there and then there are plenty of great dirt roads just to the north and west of Ouray (last dollar road in between Telluride and Ridgeway and 10 to 8 up to Silver Jack Reservior)
Ouray to Pagosa Springs 138 miles ~3 hrs Explore around Ouray again, then head south to Durango and east to Pagosa
Pagosa to Lubbock 450 miles ~7.5 hours
Lubbock to Maypearl 365 miles ~6 hrs
The dirt in the areas mentioned above around Ouray are easy mountain dirt roads that you should not have any problems with traveling and exploring by yourself. There are also easy roads going up to Animas Forks just east out of Silverton which is part of the CoBDR, but something that I think you could handle on your own. There is enough traffic on that section that if something happened, you could get help relatively quickly.
I totally get wanting to ride the whole way, this is my preferred method of taking a bike trip, but the last two times we went up there, we hauled our bike to Santa Fe NM, and better yet, South Fork CO.
Let me know if you have questions or if I could be of any further help.