It a very easy drive but the beauty isn't there. You could tour White Sands Nat'l Mon., drive your truck up to Cloudcroft for a look-see, perhaps check out Ruidoso (Circle B RV) and Smokey Bear Hist. Park, casino or Horse racing in Ruidoso then take 380 back to 54. From there to I-25 at Las Vegas, NM there isn't much.
Where are you heading in Colorado? From I-25 at Bernalillo have your driven 550 to Hwy 4 and toured Bandelier Nat'l Mon or Los Alamos? Then you could continue on 84 to Abiquiu, Chama and to Pagosa Springs, CO.
I assume you've toured Santa Fe and Taos?
Can't help with RV parks as we would use public campgrounds or boondocking along the way.