Another neat thing to make the Brawler really good during the early portions of the game is to name him 'Dengeki'. With this name, your Brawler will have +5 extra INT and 30 resistance to Lightning which is helpful if you get stunned by those annoying Yellow Gizmos at the Demon Tower. Granted it may not help much, but that extra 5 INT stat is beneficial while you continue to pour all your stats at maximum (500 for both STR and DEX, 333 for VIT). 10 SP is too short for me so having that extra 5 INT will net you 20 SP which should be enough for you to do your charged attacks easily. With my method just stack your inventory on 3-5 Goddess Tears which replenishes 30 SP and an Angel's Wing in case you ran out of SP. Hope that helps you and may you break the game and have fun as I did.