I love Plitvice, but it gets totally slammed by day-trippers. It's really essential to spend the night there so you can see the park late in the afternoon and/or early the next morning before the day-trippers arrive. That's not possible with your schedule, so I'd urge you to skip Plitvice on this strip and focus your time elsewhere.
Bus travel in Albania is...challenging. Not only is it generally difficult to find schedules online, it is hard to uncover the location of the bus station from which your bus will depart. (Tirana has several, widely scattered.) The station is usually just a parking lot with buses and mini-buses parked all over. Fortunately, I found the locals very helpful in pointing out the correct bus.
Although it is possible to travel by bus in Albania, it requires considerabl flexibility, so it's really not consistent with a tight itinerary. At the least, I'd recommend having sufficient funds to allow use of taxis from town to town when the bus schedule doesn't work. Or if it turns out the bus you're taking doesn't actually go to the town where you need to make your next connection.
Also note that Albania is in many situations a cash economy (including every taxi I encountered), and most of the ATMs have high fees. If you don't mind the risk, you can carry some cash (euros would be better, but dollars might still work, despite the current exchange-rate fluctuations) and probably find an exchange booth that will easily beat the ATM fees. You must ask ahead of time exactly how any lek you will receive for the currency you are handing over.
