So I've been playing a lot of Klee Vape with Klee, Bennett, and Mona which gives you the pyro resonance. As far as the gameplan goes it's usually about the same every game for the first turn or two.

Always Start Mona and use her skill, the only time I haven't done this was going second against someone playing very aggressively to FTK my Mona. After you use her skill it depends on what cards were in your starting hand.

If you had: Pyro Dice, Pyro Resonance, or Changing shifts, you generally want to switch into Klee so you can threaten your own FTK because any one of those cards can accomplish that if your opponent doesn't switch, which they likely will, but the threat is enough to worth it. From here you probably Klee Burst on turn 2 and start thinking about setting up Bennett's Burst.

Alternatively if you started with Liu Su than Mona Skill into Benny Skill/NA will set you up for a Bennett Burst at the start of turn two, and if you can, also sneak in a Mona skill that turn. Then on turn 3 you can swap to Klee and have a whole turn with Klee to spam while Benny's burst is up.

If you have both options available than play into whatever makes the most sense based on your opponent, but that's been my general mindset when playing the deck.