Aaron: small world, in features and experience if not in proximity! But note one thing I learned the hard and expensive way: OS Endurance works as well as OS Regular in fat low pressure tubeless tires; but it was almost worthless in 29 mm tires with tubes at 60 psi. But substituting OS Regular did what I described.
In any event, good luck with the sale and getting new wheels. I too much prefer tubeless off road. I said that you can patch tubes full of sealant, but it sure ain't a job you'd want to do trailside in a desert with sealant-dribbling tube and only sand on which to spread your stuff around.
My Rangers are mounted on far too narrow OEM 24mm OW Alex rims on a 2012 Monocog 29er with rear stays considerably too narrow for anything much over 55 mm, yet with age the Rangers have spread from 69 mm to (in front) 73 mm; 72 mm in back -- this at 13-15 psi; if you pump to 20 the tires expand so much that the rear is locked against the stays. The rear tire is improperly seated on the very many layers of Stan's rim tape and the runout brings the knobs to within literally 1 mm of the left chainstay, 2 mm on right. I mean to have the rear rim retaped (I leave such non-spec conversions to professionals) and the tire seated properly. One day God willing I'll replace the Monocog with a frame and wheels that allow a true 76 mm + 1 cm side clearance at all 4 stays.