While there is a way in which the OP's question applies more to SLD [supralapsarianism] than ILD [infralapsarianism], it still applies to ILD. The merit of ILD is that it accounts for reprobation better than SLD, but the question of election, which the OP raises, applies to both views. That is, the question of the OP remains relevant to ILD.
Well, as an infralapsarian, I found his question practically impossible to answer. It was the term "irrespective" in conjunction with "hell" that tripped me up. I thought to myself, "God does not send people to hell irrespective of their beliefs or behavior, but rather precisely because of them." Yet I had to pause and consider, "Wait a minute, a supralapsarian ordo salutis holds that he does." So, I composed my response accordingly, noting that his question is inapplicable to most people of the Reformed faith who are infralapsarian.
But now, if we remove the supralapsarian element, what is left of his question?
"If unconditional election is truly unconditional, how is it good for God to personally choose who goes to heaven ... irrespective of any aspect of a person’s being, sinful behavior, or spiritual belief?"
So, maybe it is relevant to infralapsarianism, and the answer would be, "Since it is by the grace and mercy of God that any sinners are saved at all, that is how it is good. They did not deserve his salvation nor could they ever earn it. What we have earned and deserve is the judgment of hell for our countless sins. And yet, by such amazing grace, he chose to save a countless throng made up of people from every nation, tribe, people, and language.