I am also looking to find a bike buddy for the 3 dams- The group I ride with I have asked around and are either not participating or already paired up. I ride 6 days a week (5 days commuting 20-25km each way) and 1 group ride on Saturday. Average around 300km/w (AT) around 30km/h. The weekend rides are faster as they are on roads not the PSP.
I weigh a little under 70kg, enjoy hills. I would prefer the ride to be semi social- ie set a decent pace but in it for the experience not a smash fest. Easily completed the Mundaring Loop from home (110km)at close to 30km/h average so my fitness should be okay.
Edit I am on the BWA Bike Buddies list- Josh L