Can you choose whcih Wizard dispels a spell? (I rarely have more then 1 wizard in my armies so have not come across this.) If so, have the lvl 1 dispel the Fireball on 1 DD, if he rolls a 1, no biggie. Otherwise, let it through.
I think the Daemon Prince should get himself a piece of those juicy Outriders next turn, redirecting into the Bunker if they flee.
Chimera goes for the bunker as well, and the Knights should prepare for a charge on the STank. They have lances, right? So they´d mess it up pretty good?
Move the Warhounds on the left in front of the Knights and prepare the Chariot for a flank charge into the middle (right into the Outriders flank if they don´t move). WH2 should move to hold up the STank if necessary.