apd,
Thanks for the post. Im sorry to hear of your events.
Some people have significant remodeling of their ventricle on medical therapy. While I generally use an ACE inhibitor instead of an ARB after an MI, overall you are on a pretty good regimen.
The most important thing for you is to try to maximize your medical therapy and overall cardiovascular fitness. While its hard not to focus on your ejection fraction, the most important predictor for your long term health is how symptomatic you are and how fit you are. With this in mind, again the focus should be on your fitness level.
While there probably isnt any harm for Q-10, there is significant experience with Statins, that really negate the purported benefits of taking the supplements.
good luck