In reply to Jayne Robson:
Hi Jayne, I've lived in Hobart for more than 10 years. In response to your questions:
As a previous poster stated, thesarvo is the most definitive source of info for Tassie climbing (and the guidebook can be downloaded as an app). Thecrag is also helpful and often gets new routes posted up quicker
Hillwood is currently closed to climbers, although the situation is evolving rapidly. For 'friendly' mid grade sport climbing consider Sand River in the south (~1 hour drive from Hobart).
Ben Lomond is a huge plateau - the main climbing areas on the northern escarpment are totally doable in a day from Launceston, the wilder southern escarpment is a bit more of an effort and commitment). There's not a lot on the Ben at your grade range though, and a lot of the routes require a very big rack (think long splitter cracks with the same size all the way up).
I don't know much about Cataract Gorge. Organ Pipes are ~ 20mins from central Hobart, classics for you would be Fiddlesticks and Chancellors Direct. The better stuff is 18+ though, and there's not much opportunity for top-roping. There are also some good sport routes on the Pipes, the bolting is safe but can be spaced near the top of pitches,.
For good campgrounds, Whitewater Wall at Coles Bay (Freycinet) is certainly up there. There are climbers bothies at both the north and south escarpment of Ben Lomond. Fortescue Bay (on the Tasman Peninsula) is beautiful and a good jumping off point for al lot of the peninsula climbing, but book ahead in the peak season (Dec-March). Also consider Cloudy Bay on Bruny Island, it's a beautiful spot with some great climbing (sport and trad).
In terms of a guide, contact Garry Phillips:
https://climbingtasmania.com.au/about