There is a connection bus between Gipfelbahn Hochwurzen and Planai Bergstation with parkings around to finish the circuit. 

More info.

When no time, even the day tracks oround Planai or Hochwurzen are nice.

Huts can be busy. don't forget to book in advance.

Gollinghütte and Preintalerhütte has an accomodation from twin rooms to a shared lager. 

Keinprechthütte has a 3-4 bed rooms or a lager.