The last paragraph the kind of perspective I was hoping for, thanks! So if I understood you correctly, pleasure and displeasure (a.k.a pain) are the two sides of "emotion" and for there to be more pleasure there has to be less displeasure/pain (like for the two sides of temperature; to be warmer it also has to be less cold).

So the goal is pleasure just as much as it is absence of pain because they are the same thing. And within that goal there can be a distinction between different types of pleasures/states of absence of pain where some are better than other because of their properties in terms of how easily they are attained/maintained and these are what are called ataraxia/aponia, which are not technically goals in themselves but rather "the most preferable ways of reaching the goal of pleasure/absence of pain"?