Alright Star, I'm going to start my battle with ash if that's okay. (It will be a while before I get it posted so if anyone has any thoughts or wants to be their like Gala will, just tell me.)
Also Stabberz, to add with the plan of Masterleo. I could make Gaia travel with him, not acting like a guide(maybe though) but more because she needs to go to the first 4 anyway. Then leave after the fourth, and Ash notices when he and Anabel arrive at Dewford Battle Cave that she's the fifth brain after all.