I will see if I can get some time off work.
A week in Tassie is enough to see the whole joint.
If you are staying in the same place the whole time, you can easily make it back from wherever you are in the same day.
I would do the eastcoast drive, the westcoast drive, a trip up the guts from hobart to launceston. Thats three days. Then zig zag east to west for a couple of days. There isnt a lot to do apart from look at the scenery.
Make sure you have a look at the lakes in the highlands, and the only touristy thing I would do is a cruise up the Franklin River or a flight if you can afford it on the seaplane.
Make sure to stop in at every pub! Dont miss Ringarooma, Pyneganna (the pub in a paddock) Huonville, Zehan and call in and see Don Smith at the Kings Meadows Hotel in Kings Meadows, tell him Mick Bolman from the harp Hotel sent you and he will shout you lunch, tell him I said he has to.
Wineglass Bay, Triabunna, St Marys with the inbreds, Scamander, the Gordon River, give Port Arthur a miss, dont go on any "Coach tours".
Tell the greenies that you love trees and tell the loggers that you arnt a greenie.
That about covers Tassie. Eat Crayfish, Scallops and Oysters. Go to the Drunken Admiral in Hobart for Dinner. Dont bother with the two casinos unless you want a game of Two up for the fun of it.
The Botanical gardens in Hobart are ok, have a peek at the Art Gallery too. Not much to see in Launceston except the cataract gorge. Hobart is 1 hr from Launceston and there are people from either town that are 90 and havent been to the other.
Most of all, call into every pub and ask what is worth having a look at.
Tasmaniacs are the friendliest people on earth. I am PMing a girl I know down there to see if she has any time off. PM me your cell phone number if you can and I will give it to here and get hers for you.
You wont need a 4wd to get anywhere off thebeaten track at this time of year.
If you want to catch a 10lb trout, have a go in the highlands on one of the lakes, thres plenty of guides and they dont cost much.
No one will rob you or rip you off, there is no such thing as "tourist prices" in Australia.
Eat in the pubs, "counter lunch in the Public bar" is the go.
Its light at 5am and dark at about 7, so get up early and go to bed late. You can see sunrises and sunsets over the ocean every day and they are always great down there.
The only souvenier I would buy is somethng made out of Huon Pine. The only Huon Pine around now days is from the bottom of lakes, its a special timber, google it.
There is cascade beer in the north and boags in the south. Boags makes you fart.
To summarise, the east coast has lovely deserted beaches, the west coast has rugged cliffs. The guts has mountains and lakes. The air is the cleanest in the world and so is the water. Therefore the beer is good.