I can't speak about heart issues, but, based on going through two severe rotator cuff surgeries with my favorite riding partner, my husband, I imagine that you will be impatient to get back on the bike, and will be tempted to do more than your doctor wants you to do faster than he wants you to do it. And I would encourage you not to think of yourself as the exception to every rule--which is very difficult for someone who is an exceptional athlete, as you clearly are from your riding history. Try to focus on short-term patience (ride deprivation) for long-term gain. Good luck!
If you have health, you probably will be happy, and if you have health and happiness, you have all the wealth you need, even if it is not all you want.