For any classes that require a lab component, try to do that in person! A lot of PA schools require that they are in person. Also for the ochem requirement, some schools will take biochem instead or won't even require either of them (just bonus courses). Definitely do your research in the prereqs for the specific schools you are interested in! The school that you take your prereqs at will have a different order that they require for the classes- but ochem will definitely be last. Bio will be needed before micro and A&P. When you get an advisor, you'll be able to get a better sense of what the order will be.
I did post-bac classes both online and in person through Troy Uni (I live in Alabama). So I was able to work as much as possible while taking the online classes, then I dropped down to part-time to do the in-person classes. Some schools offer an accelerated A&P 1 and 2 where you can complete both in one semester- might be something you want to consider to maximize your time.