Solid looking stall deck from first glance.
Yes, as others have said, Mitosis is unnecessary in this deck, as 6 Queens (well you won't draw all of them, but most probably) will be more than enough to fill up your board with aggressive attacking creatures! 4 Hopes are good imo, because you will want a good chance to draw one in your 40 card deck (or less if you take out the Mitosis). Now let's take a look at your quanta balance. WOAH. That's a lot of Air quanta. You have 12 Wind Pillars (theoretically because 13/2=7.5 Pillars+5) which are more than enough to fuel 6 FFQs. I suggest you lose some Pillars if you don't want to endlessly draw Pillars/Pendulums. Now you would have more room for other cards. Let's look at the Heals. Good burst healing to negate rush power. However, since your goal is to fill up your board with creatures, may I suggest Feral Bonds instead of Heals for long term healing. Now let's move on to the Miracles. Consider the following: with a decently filled board of Fireflies as light emitting creatures and a Hope shield up, and an arsenal of Heals (or Feral Bonds) to ensure you won't die from burst spells such as Fire Bolts, do you really need that healing? Take those out if you wish.
Again, solid looking deck and after some of the changes I've suggested maybe it'll have better performance than before! Good work crowbarofjustice.