Croatia itinerary doable?

I booked a flight to Croatia for 12 days where I land at 4pm in Dubrovnik and fly out at noon so this gives me 10 full days. I don't really have crazy expectations just booked it on a whim, but my logic here is to immediately go to Split from Dubrovnik on arrival day and work my way back to Dubrovnik.

So far on my tentative list I have

- Split

- Hvar

- Dubrovnik

- Plitvice

- Kotor

- Mostar

I recognize that's a lot and looking to see where I can optimize day trips and also relax or potentially shave time on certain things. I'm pretty well traveled so getting around is not an issue and I'm not a budget traveler so I'm ok in what appears to be pretty overpriced (relatively) places like Old Town Dubrovnik and Hvar. I'm just looking for relaxing beaches, good food and beautiful scenery as I like to photograph. So any recommendations for like overlooks or spots to capture great photography are appreciated. I'm a pretty youthful late 30s so while I'm not trying to party like a 20yr old I'm fine with a little bit of going out and I know Croatia can be big on nightlife so as long as it isn't the equivalent of a college bar I'm ok with nightlife recommendations as well.

Does it make sense to go from Split on down? Looking for any advice. Thanks!