Hi S3th17,
I too am an Aussie (46) with an ATPL, held a class one medical since 18 (coincidentally when the Bicuspid Aortic Valve was diagnosed). Got the medical without any problems and have renewed it yearly since.
One thing you need to be aware of if not already is that a BAV will render you susceptible to bacterial endocarditis (inflammation of the heart due to bugs). If you get BE then this will cause you considerable problems with holding a medical certificate, not to mention the life problems that go with it (extended hospitalisation with extensive IV therapy to combat the condition). You will need antibiotic coverage for dental and surgery procedures to prevent this.
As the cardiologist told me when giving me the diagnosis....look after your self and come back and see me at 75 and we'll have a look and see IF we need to replace it then!....
Hope this helps....
Tinkicker