Flint makes a lot more sense now since it can help you get to 1 card in the hand. I this believe this will be a very strong card for volcanion decks although parallel city can ruin the fun.
I suggest switching some psychic energy with counter energy since you can attack with gengar/latios for just 1 counter energy if you are behind on prizes. If you are not behind on prizes they can still serve as the [c] in the creep show attack.
I would at least drop 1 guzma for an ultra ball. Also it seems like counter energy could be a good fit for this deck since you'll be behind on prizes most of the game.
I suggest the following changes to pull of the kiawe ho-oh combo more often:
remove
- 1 Kiawe (you almost never use more than one in a game)
- 1 rescue stretcher (it does not seem like a card you would use often in this deck
- 1 switch (you don't need that many switching options)
- 1 guzma (3...