Started with Maneki-neko and got Pop really early on, which led me to try stacking mana + empower. Pop dmg was equivalent to one staff, so not needed to the build.
Magical Girl felt like the best subclass because of Cupcake Staffs, and I even got 2 at some point, but swapped one with a Spiked Staff and it got even better.
Puzzlebag start could give more bags of energy, but I only got one and since most of my Mana Orbs were outside of it, it didn't matter that much.