Yes, I love using mitosis on the fireflies from FFQ for double generation. It also works great with Overdriven Shrieker when it's at 19/1, as it stops overdrive. However, I'm not sure about adding more mitosis, as it will take up a lot of quanta of earth, air, or fire. Well, and life. I might need to add more pillars if I were to do that.
EDIT: Just won 10 out of 10 plat decks in my ttw study :O Got lucky with 2 1 hp guys though lolol. So should I do the ttw on plat, gold, or level 4 though? Gonna stop for today though and quit while I'm ahead before the win rate goes back down XD