19 days in Montenegro/Bosnia/Croatia in August – Is this too much?

Hi all, I’m planning a trip from August 16 – Sep 3 and I’m going to explore the western balkans. I’m a pretty experienced traveler that prefers to just go with the flow and not have anything booked but I understand it’s high season and it may be a necessity.
Here’s a rough outline of what I have so far, everything is modifiable other than the flights at this point.

**Aug 16 – Aug 18**
**Kotor**

Explore surrounding areas

**Aug 19-21**
**Žabljak**

Black Lake

Tara Canyon

Rafting Tara River

**Aug 22-24 Sarajevo**

**Aug 25-27 Mostrar**

**Aug 28-29 Dubrovnik**

**Aug 29-30 Split**

**Aug 30-Sep 2 Hvar/Korčula**

**Sep 2 Plitvice Lakes and Zagreb**

**Sep 3 Fly out of Zagreb in the morning**

It all seems fairly cramped, maybe I can get another week off of work and extend the trip to have it breathe more.

19 days in Montenegro/Bosnia/Croatia in August – Is this too much?