Chris,
You are in for a treat. The roads really are fun and can get very busy all of a sudden.
I travelled from Hobart to Queenstown in November and managed to burn out a set of rear pads over Mt Arrowsmith due to an excessivly soft compound. The material overheated and just fell apart!
Good brakes and good suspension coupled with Tassie's good roads (mostly) and the scenery makes for a good time. West Coast roads are my favourite but they need to be treated with respect!
You will have a ball, I am jealous