Judging by the majors you say you have an interest in, you're probably going to get more out of social science. I'd say you should take a look at the programs you like, look at their courses' first year pre-requisites, and see if going into Humanities 1 is going to make it difficult for you to grab all the first-year pre-reqs for what you'd like to go into later. E.g., looks like you're going to want 1st year economics (for commerce) and polisci. And if you want justice & law you'll get some nice background from 1st year sociology. Also, taking commerce means you need maths, intro accounting, and so on.
The Humanities Course List 1 & 2 classes look like a waste of time for your stated interests, except maybe History 1EE3.