u realise if u were to add dragon dance that u would have to rebreed it and having dragon dance boosts physical atks not special atks so it would be useless
maybe jus rebreed it and get a jolly or adamant charizard with dragon dance and give it only physical atks
that a unique set-up but even with the benificial nature and if u have max ivs on atk its only 293 which isnt good alone if u were to have a physical move make sure u have dragon dance to back it up
but this set-up works imo
Charizard nature timid
252 special atk/252 speed/ 6hp
atks dragon pulse
flamethrower
air slash
and focus blast
and for an item give it a life orb