Without knowing anything about the specific requirements, artistic style and so on, nobody can advise. At this point your question is merely like asking whether to take a blue car or a red car to get from A to B, which is rather meaningless.
My apologies -- I should've included specifics.
I want to make a short (60 - 90 seconds) animated video with two cartoon people. The people will each be sitting at a desk, they'll be talking to each other on the phone (ideally via split screen), and they'll each be picking up objects -- a telephone, and a folder. Oh, and I should mention that I don't draw.
Any guidance would be greatly appreciated.
Your only option without drawing skills in AE is to take some stock artwork and animate that. A lot can be done, but character animation requires a good knowledge of motion and the animation tools in AE. I've been doing this for a very long time and I would bill you for probably 20 hours to create a one minute animated video like you describe. It could easily run twice that.
If you really want to do this in AE I'd start learning the basics and then go from there. Without drawing skills you may be better off with some other application. Try searching for character animation tools.
BTW, every good character animator that I know or have ever met have great drawing skills. I would think seriously think about working on those skills as well.