Not sure why yall are dogging the 10 speed. People are abusing the hell out of them on the dragstrip pushing way over 1000 hp and going into the 8 second zone and they are holding up well. Should be plenty strong enough for a bronco
Do the tune first.
The tune will give you plenty of power by itself. Unless you are trying to squeeze every last drop of hp out of this engine, no need for all the other mods