A long story short, At my school Calc 3 is a 4 creidt course with a lab and I really don't have room to fit it in my schedule next semester. But I can fit in Elementary Diff Eq.

My question would be is it better to take a (much) harder class such as Diff Eq or take a semester off of math and take Calc 3. How much of a step up is Diff Eq from Cal 3?

As for a little about myself:

I'm in Calc 1 right now and taking Calc 2 over summer. I'm decent at Calculus and I can learn most stuff so far through working pretty hard at it. I'm no 'natural' at it but I can learn.

Thanks for any help