My wife and I are interested in visiting Croatia in late-May for a little over a week after having spent the previous week touring Tuscany/Rome in Italy. Right now, my best intercontinental flight options have us going from Rome to Split, though we have the most interest in spending most of our travels visiting the Istria region. We'd also like to visit Plitvice and/or Krka national parks since we will be nearer to them if arriving in Split. I am open to renting a car for getting around if it is recommended. I'd like some input on the itinerary to see if it is reasonable. Thanks in advance!
Day 1: Arrive in Split from Rome in early AM, visit Split during day and stay in Split overnight.
Day 2: Visit Krka from Split, head to Zadar (or alternative closer to Plitvice) after Krka to stay the night.
(Note: we can cut out this leg of the trip and just go Split -> Plitvice on Day 2 and skip Krka/Zadar if the itinerary is too dense, allocating the extra day to Istria or other if recommended.)
Day 3: Visit Plitvice in early AM from Zadar (or alternative), make the long trek to Rovinj from Plitvice in afternoon.
Day 4: Explore Rovinj all day.
Days 5-7: Explore Istria cities (Motovun, Pula, Porec, Bale, etc. etc.)
Day 8: Istria in AM, head to Zagreb to stay overnight for flight next morning (we're not too interested in any substantial time in Zagreb other than to make our early AM flight)
Day 9: Flight home.
Does that sound a bit compact for the time frame? I'd love any advice from seasoned travelers. We definitely want to try to see different regions of Croatia, but will be mindful of overloading ourselves. Having a few days in Istria is probably the most important to us.