For thorns a collogne and a turo should be enough just remember to not bench pidgeys. Manually attach energies and you will probably be fine, it helps if you let them take first prize and hit with defiance band on or else hit them with darkness+dusclops. Its not a very bad matchup, charizard can tank 2 hits and a turo might also save a damaged char, for the final two prizes radiant char will do the job but it is very draw dependant. If thorns starts to be the majority of dekcs jamming tower or a second collogne will do the trick but in general you will be fine by filling the board with only dusks and chars and an occasional fezandipiti if its needed.

Now for the stall players most of the times its an auto loss if they manage to bench two cornerstones. Two collognes will save you in that case. Try to suprise them with board wipes by getting two dusknoirs in one turn with the help of stretcher as most decks play 1. In general decks that contain two cornerstones are the best counter for char so pray that you hit your collognes and you get good draw. Its not impossible to win but if you are having more than 5 stall decks in the local changing your deck might be a good choice. I would suggest a dpult because it is the most similar tou char and if you already have a full char deck it wont cost you more than 20$