One problem with waiting to take pre-reqs is that you may not be accepted until the end of the year - possibly even August - when it is no longer possible to take those classes. What is your plan if that is the case? I've heard they will look at your transcripts and rescind the acceptance. I'm in a similar predicament with some of my classes being too old for some schools and I have decided to take those classes this year even if I have other priorities because I don't want to be prevented from matriculating based on classes I did or did not take.
This means I'm taking another English class (I have one semester already and two semesters from AP), and two upper level Physics classes even though I'm an engineer. It's not ideal, so I definitely understand your perspective!