I've found that is good if I don't have another way of getting sneak attack but with steady aim I get advantage on attack which automatically grants sneak attack plus I have better chance to hit so unless the enemy is close I find I always use SA then fall back on IF if I have to move. Thing with SA there's no ability check roll like with IF or hiding. It just works.Insightful fighting is a single bonus action, and it triggers sneak attack against that creature for a whole minute (10 rounds).
I'd be inclined to use IF till it stuck, and then move to using other abilities.