I think it all depends on what else you’re doing at the same time, what you’re used to, and what your talents are. For me? That would be too much now that I’m working about 25-30 hrs a week, and considering that science classes are HARD for me. But in full-time undergrad 10 years ago, with just a 5-hr-a-week TA job and no other major commitments, I wouldn’t have blinked an eye at taking that many history or language classes. (Orgo would still have given me pause...). If you’re a full-time student, good at science, and have the stamina to take on a full course load, you’ll probably be fine. Make sure those study skills are up to snuff, though, and all I will say with Orgo 2 is DON’T GET BEHIND!