Take your time, for me it is as you say one of the most important subject to distinguish Epicureanism vs the other ancient schools especially Stoicism which I followed in the past.
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In addition, it is precisely on this topic that the harshest criticism of Epicureanism is voiced. For example the critics say that where Virtue is instrumental for Pleasure, this Virtue wouldn't be Virtue at all or only a weak form of it and Pleasure enslaved.
( Often the divison of Pleasure of Body and Mind is not considered, for Peace of Mind/Tranquility it often makes sense to not pursue bodily Pleasures, and for the subject of bad consequences of things which bring Pleasure like addiction, Epicurus has his answers like sober reasoning, hedonic calculus, what brings more pain than pleasure should be avoided….)
The Stoics accept only a perfected rational joy(chara). But even this they would not see as the end of the happy life but Virtue (Maybe because you can get to a form of Tranquility with ignorance and in running from challenges/duties ( another critic), but this is not suadtainable/honorable/just/prudent(defense).
A perfect Peace of Mind is only available for a perfect Sage and with Virtue (The Stoics say) ( maybe an unlimited desire for limitless self improvement ? )