Be careful!
When I had my heart event I was working for the FAA which made my decision pretty easy, I HAD to do it the right and legal way. First step was to take care of myself and get healthy and keep all records. Luckily my heart problem was minor and a rather short waiting period-2 months. Next was to find a GREAT AME! Dr Stephen Kramer in Frisco, TX is awesome.
http://flightphysical.com/dr-kramer-s He has worked on the board in OKC for the FAA doctor panel and knows the process. Furthermore, he is a pilot who loves to fly and understands my passion for flight. Next, get a cardiologist who understands the FAA requirements and is willing to make the reports as the FAA needs them....no matter how odd and archaic the demands may be. Dr Kramer directed me to an understanding heart doctor. Lastly, do not try to hide your ailments. Medical records are easily found and the authorities will have access to these records at the most inopportune times. At best you hurt or kill yourself. At worse, you take someone down with you. Flying is grand but with it comes great responsibility.
On sport pilot-this is a major misconception. If you have a heart problem followed by a heart procedure, yes, if you are healed and physically fit, you can self certify and fly sport. However do not be fooled about what a giant responsibility this is. When you self certify, your are certifying that you KNOW you have no unairworthy health issues. In other words, if you are flying knowing you have had heart issues but have not involved the proper tests and procedures to verify that you are indeed fit to fly, and you have an accident or incident, your insurance will not pay, the FAA will come investigate you and in general, things are going to be bad. You carry a huge liability when you self certify. To me that could be financially disasterous. Not to mention the inherent personal health risk to yourself and others.
My advice? Do it right, go through the effort to ascertain you are healthy to fly and get your good AME involved soonest. The FAA is streamlining the process and making it easier and SI's lasting longer. And if the FAA board of highly experienced doctors, all specialists in that particular SI, comes back and says you should not fly, very rare these days, maybe you should not fly.
I am no longer with the FAA and am now a professional pilot and every six months I go through the pain of the process and the axiety that goes with it. But I know the risks involved and want to make sure I am fit to fly. Yah, I wish it was the way it used to be where if I walked in the docs office a few minutes later I walked out with my medical but....it is what it is, thankful I can still fly! Doing it right and legal is a good idea for any of us.
Tailwinds!