check out the course reviews/course outlines on this site
hint: psych 2AP3 used to be psych 3N03, they're just changing it this year to a 2nd yr course. I assume/hope that means they're making it slightly easier, but I could be wrong.
also, you should check and see which of those courses are available on solar, since it's pointless to spend so much time picking a course, get your heart set on it, and then find out it's full
the orgo workload isn't that bad though
i wouldn't worry too much about finding a light course to balance it--you can put in as much work as you have time for, since there are very few mandatory things that you have to do for orgo.