Question

Is taking a semester of statistics, vector calculus, physics II, and an upper div. psychology class be too hard to handle together?

Answer 1

That would depend on the person. Some people (likes me) can't even handle 3 challenging classes, let alone 5.
but I do know of a couple of people who actually can pull it off, and are therefore set for life.
There are some factors involved with deciding all this.
- can you handle all the workload?
some teachers give more classwork/homework,
while other teachers give outrageously difficult tests/quizzes,
if you think you can handle that, then sure take the classes
- do you value your GPA/grades more than the information you will be learning?
In some cases you might get a teacher in a challenging class
that swears to never give anyone an A,
but if you are willing to put up with that, go ahead
- are you really interested in learning what will be taught in those classes?
because if you aren't really interested in the topic,
then what's the point in learning it? :P

but it all comes down to you :) If you choose to challenge yourself and take all the classes, you will meet many smart people with whom you can befriend. If you choose to drop of few of those you had suggested, then there would be more of a chance that your grades would be safe.

I hope this helped, @mony01