Sounds great. I've done the gardiners creek trail a few times, and anniversary trail, yarra trail, merri trail, plus others so would be keen to go for a ride.
The thought of a post ride swim also won me over
It's great that you are so keen. I was the same last year when I first got a bike. I was really scared to go on the road, but after a while you get more and more confidence and then you'll find you want to go faster, which you can only really do on the road.
I am on holidays till the 7th so should be able to join you one day. Sacha