Mulligan: 1 cost Vegeta or Goku, if both, better.
T1: Play 1 cost. Search for Exevolve targets for both Vegeta and Goku
T2: Exevolve, Awaken, play the other 1 cost and Exevolve again. Another option is playing Z Bulma and combo the card underneath Exevolved cards.
T3: let the carnage begin with fusions and 6 cost Duo. If energy is available set up the Z Extra. Bait the opponent onto wasting resources and set up for T4.
T4: This should be the killing turn if possible. But keep in mind T5 Cell Xeno can be devastating. Read the game and adapt.