It's a good time of the year for Tassie, not as many "visitors", easier to get accommodation and weather often cool but clear with frosts in highland areas and the chance of snow. The Cradle Mtn area is particularly good this time of year, plenty of chances to walk but also the chance to get snow & ice.
Enjoy it, I miss it tremendously. If my wife and I cared only for ourselves - we would be back living there in an instant.
If you get a chance another magic favourite of ours is Lake Dobson & Eagle Tarn circuit, absolutely simple walk but also wonderful, just 16 km behind Russell Falls and directly under the Mt Field ski areas. Have some crepes (supe yummy savoury or sweet) at the Salmon Ponds (@ Plenty) on the way from Hobart - another favourite.
Have a good time - post a report somewhere when you come back.