Steve, if you get stented you are down for six months, but it can be six months TO A DAY.
in the period between days 150 and 180, arrange a treadmill test to 90% of your age-related V-max, that is ((220-YourAge)*0.9) and at least 9 minutes. When you have that accomplished without ST segment depression of 1mm, a fifth month "current status update" from your Cardiologist (containing your meds, doses and risk factors- and what you're doing to modify them), a fasting glucose and lipid profile, a serum creatinine, a good AME can get you a special issuance on a phone call and re-exam in the office.
Your third class will last 2 or 5 years, depending on age 40 or not; every year in the 90 days prior to renewal you submit a cardiologist's letter and a new treadmill, for the next year in your 2 or 5 years.
I don't know where you are located; I can help you gather the documents (e.g, an address for the docs to send correspondence to, as in NOT direct FAA, until we see whta you have), some pilots actually make the trip to this godforsaken FROZEN patch of upper midwest, but getting the documents together and telephonically approved in one swoop really saves you a couple of months.... and you get to keep control of your file (rather than have potentially unflattering documents sent to FAA).
When you get to both 90% of your age related Vmax and 9 minutes, GET OFF THE TREADMILL (ouch, my ankle hurts...). Anything beyond cannot be anything but unflattering and the minute you get to that nexus, you have proven yourself to be low risk anyway.....