As Eva wrote, that wasn't so bad actually. Yah, you are hiking all the time on the road (not busy ones), but you can swim in Peručko jezero, which has really clean water. I found a nice place to swim and also sleep (you need to search for a flat place a little bit) - if you take a trail to the lake at 13,8km. Locals told me that many trails lead to the lake from the beginning of the lake to Dabar. In Dabar as it was already written, nice place to swim and sleep (quite many locals on Saturday afternoon).
Shops in Rumin, Obrovac Sinjski and Otok.
Covid test 20€ in Sinj (Mon-Sat, 7am-10am).
Via Dinarica HR-W-26 Izvor Cetine - Peruča - Sinjsko poljedetalji