@Vix1963
In my limited experience, the hospital depended on my breast surgeon and might have depended on whether I was a public or private patient. Looks like the Austin will be your starting point (good luck with the heart surgery) and that you may have chemo first. You will also be referred to an oncologist who will be able to advise on the chemo regimen and whether you risk losing your hair. You may, so you should also ask about cold cap treatment to try and save it. Doesn’t seem to work for everyone but some people have had excellent results.
Best wishes, it’s a lot to face at once but take things day by day.