Hi Adam,
I'm a fellow PPL student and have completed 19.5 hrs and started the navigation.
I solo'd at 12.6hrs and have now logged 2.8 hrs solo (P1) circuits. My first flight was on 17/08/10 and my solo on 18/09/10.
Good luck and don't stress about it as it will happen when everything is ready.
Regards,
Dan.