If it where me I wouldn't put any of that stuff in there. If it has fluid then using a canned patch would be useless. Assuming it doesn't have fluid in it, it could be leaking around the valve stem. I'd bite the bullet and remove the tire and take it and have a tube put in it and be done with it. It cost me around 100 bucks. 50 to dismount and remount with a tube and 50 for the. Cost of the tube.
Using a stop leak in a tractor tire, if you ever had to have the tire serviced, they will probably charge you extra because of the mess that stuff makes and has to be cleaned up servicing the tire.
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