Welcome Alistair!
I would be inclined to get a full service including brake and clutch fluids in particular, if it had been sitting that long.
Brake and clutch fluid is hydroscopic, meaning it absorbs moisture. So it shucks in moisture, even in clawed systems. That moisture can then grow algae which can block little holes.
I'm not sure about the 1100s, but the 1300 had a combined braking system which means to change the fluids correctly it requires a special tool.
All the best on your search and eventual purchase.
At your height and weight, it might also be worth checking out the 1300. There are a couple for sale amongst the membership.
Hopefully you will have purchased it in time for the Balranald overnight RTE (Ride To Eat.
Heck, even if you haven't pop up and check out a large gathering of STs.