A guy in the Vale got a bit of stick for this, last year.
I drove past this in my tractor, and thought wtf is going on there? Didn't even realise it was Halloween. I don't follow crappy American traditions...
Flinging our borders open 3 weeks after Melbourne has its most illustrious super spreader donkey race holiday is just asking for trouble.
I would bet 1/20 of a bitcoin that Tassie will have us tagged as a danger zone come travel time.
I vote option 3. It's going to be a big day, and singletrack is very taxing neurologically as well as physically. Breaking these sessions up with (relatively) easy km gains in between, should help you stay switched on when it's needed.