The best news is that you have given up smoking and continue not to smoke. Because you have no other risk factors, smoking is probably the one and only cause for your heart attack. Unlike other risk factors this is a totally reversible risk and you have done the reversal!. You have no family history and your lipids are excellent. So you are very unlikely to ever have a heart attack again. However you may periodically (once in 2-3 years) check your heart function by echo, if there was any damage from your previous heart attack. Cardace prevents your heart from dilating after a heart attack. You may continue to take Ecosprin, Cardace & 10 mg of Simvas life long. A single tablet called Polytorva is available that contains a similar combination and you may ask your doctor about it, if you are concerned about taking too many tablets. You may also test:
1) serum homocysteine and 2) Lp(a) which are cause of heart attacks in young non-smokers.
The fact that you are climbing 11 flights of stairs implies that you heart function is excellent and that there was little permanent damage from your heart attack. You should continue to exercise. Your large diameter stent is unlikely to narrow down (happens only in the first 6 months after the procedure), but you may undergo a stress test to document that there is no narrowing down of the stent, after which any amount of exercise will do you only good. Your other heart tubes were evidently normal during the angiogram done during the PTCA.
I would not advise more than 60 ml of whiskey or similar beverages/ day. It may do good provided you do not get addicted. I would suggest red wine as the addiction is less and it may be better than other beverages. But all this might be a moot point in your case as the only cause of you attack seems to be smoking and the risk of smokers comes down to normal levels after 2 years of smoking cessation.