The first event I felt ready for was the Waltz event (I did ok with Imelias event but was juggling unit building and doing the event so didn't get a huge CR on her.) and I managed to complete all missions only to find out Waltz event was easy. So I am guessing this event will show me just how good my units really are. Which is good, I am at a stage where I need direction with my unit lvling as I am lvling the units I like first as my core seems to be decent at this stage.
I have quite a few valks from summons, my strongest are Elaine and Kerry. I have yet to lvl Thetis and Dahlia so I pretty much have all valks in aigis except for this event one and Clissa though I only really use them if I need high HP units as I usually use Sybilla in their place or Imelia.