Having lived directly under that flight path, there are exceptions to the curfew, especially for international flights. Even then, the first flight comes in daily at around 6am (or did when I lived there) and worked as a fairly effective alarm for me.
I'm under a flight path in Brisbane, yeah those freight flights are surprisingly loud compared to the general traffic. For a lot of the dedicated domestic freight flights where I am (I assume it's similar in Tassie), they tend to use old 737-300s and -400s which sound about as loud to me as a much larger 777-300ER flying over, and louder than modern wide-bodies like the 787-9 and A350. Crazy how far engine technology has come!
Oh, those 2am freighter flights! I'm in a super quiet area of Trevallyn, which makes those couple of flights quite loud. Also, Launceston has a similar set of runway lights, that you drive under, and look very close to a house.
Planes coming in above us were at about 1000ft, and there was definitely vibration, but not enough to damage windows. We did have some badly secured pictures fall off the walls, and items on shelves had a tendency to vibrate their way off the edges.
Not 140dB, but to give you an idea of how loud it was, we had to pause the TV or conversation when planes were coming over because we couldn't hear it.
We could absolutely recognize models by sound.
Very rarely did we have anything larger than an A320, Adelaide is not a big airport, but we did have some big military aircraft come through.
I suppose you might get used to it if it was fairly regular every day? I used to live right across from a hospital trauma center helicopter pad. That was annoying because most of the time it was no issue, but every once in a while at like 2am, all heck broke loose with "Thump, thump, thump" in the air and bright lights pouring through my windows. But then, I couldn't get too annoyed, as the fellow in the helicopter undoubtedly had it much worse than I had.