Welcome from sunny Queensland, lucky you and what a birthday present.
I got spoiled and pretty much ruined for life when I went down to your neck of the woods (out near Warburton) and the mate I was visiting hired 3 different ebikes to try out and he wanted to get one. After a day on them swapping about, how could you go back. As a mate put it on the weekend RIDING AN EBIKE MAKES YOUR RIDING ALL DOWNHILL!
I ended up with a Merida E160 900E and the grin you get whilst flying up a hill at around 20kph, you can't buy that sort of fun.