But it's not a matter of overload - I've tried and failed on this issue. The matter is that you will have /too many points/ OVERALL - you're simply not allowed to take the extra subject unless you're granted overenrollment (which is different to overloading) and the EPSC doesn't like giving it out to you. You cannot do >300 points. I am not allowed to do >300 points (an extra subject) even though I take three subjects each semester.
So basically, you could take these subjects and then end up not being able to remove them later.
This could result in a pickle - can't take more subjects, can't remove old ones. And you'll only run out of points in third year, which means you might have to remove important prereqs, major creds etc. Nobody will stop the overenrollment until its too late unless you try and fill in your entire study plan now.
To reiterate - if you decide to take first year biology, both subjects, that is 25 points.
You will have 125 points of first year, the maximum.
It follows that you can no longer complete 200 points of 2/3yr. You can only do 175.
So that 25 needs to be deducted somewhere, it doesn't really matter where, as long as you do 62.5 second year points and 75 third year points.