Executive Summary answer to the question: No, the BS routes will not work for STAR.
Detailed Info: First, it's 137 miles from the Bull Shoals Rally HQ at Theodosia to Springdale, AR. None of the BS routes go through Springdale. The closest one is the Bull Shoals BW313 route which comes to within 54 miles of Springdale.
I suppose you could ride from Springdale to the BW313 route, do the route, then ride back, but that would be a 421 mile day. That would be a Very Long Day, given those roads. Of course, you would still have to redo the BW313 route to have it start & finish where you would join it coming out of Springdale.
Am not sure who is doing the GPS routes for STAR, but confident it will be in good hands. The AR roads are fantastic!
Norm Kern