Which Park Deserves 2 Nights vs 1?

Hello,

My wife and I are van camping across California's National Parks this upcoming May (assuming the forest fires don't force us to change our plans, but we're ignoring that possibility for the time being...) between 5/10-5/17. And we're currently planning to spend one night at each of these parks and then drive to the next one. But we have additional time so we can spend one more night at one of these parks. And the parks that we're going to (in order) are:

  • Kings canyon
  • Sequoia
  • Pinnacles
  • Channel Island

So which one would yall choose to spend an additional day at? All advice, guidance, and opinions are welcome. Thank you!