Many (most? all?) medical schools will not accept 100% online coursework for classes that have a laboratory component. Consult the admission website of each medical school you’re interested in for specific requirements. Also spend $30 on the MSAR and read the online class policies for each school. (For example, some medical school require student to obtain written permission before enrolling in an online pre-req. Others will only accept online lab-based pre-reqs for applicants who are active military stationed overseas.)
You have an additional issue. As a non-science major you will need 2 LORs from science professors you have taken a class with as part of your application. A LOR from a professor who knows you well personally from a butt-in-the-seat class will be much stronger than someone from an online class. (I’ve taken distance education coursework. It’s really hard to make a connection w/ your prof or classmates since people are never online at the same time.)
You will be much better off attending your local CC.
You will probably need to pony up and take biochem at least at a 4 year college. Why? 1) Biochem typically is not offered at CCs. 2) Some adcomm members really have issues with CC coursework and view it as less rigorous than coursework taken at a 4 year college. (In fact, a handful of medical schools flat out will not accept CC credits as fulfilling med school admission requirements and more schools won’t accept them unless supplemented by additional upper level science coursework taken at a 4 year.) Adcomms want to see how you stack up against [more competitive] students at a 4 year college so they know your CC grades aren’t flukes.
You need to be aware that whether you take your coursework online or at a CC, either action will make your application less competitive than someone who has followed a more traditional educational path and taken pre-reqs at a 4 year college.
I have to ask, is there any burning reason why you must take your med school pre-reqs right now while you’re living out of state? Why not wait until you’ve finished your masters, then either establish residency in the state where you’re currently living or return to your home state and take your pre-reqs there?
(Please, please, please don’t say you’re too old to wait. Unless you’re in your 50’s, you’re not too old to wait 2 years to put yourself in a much better situation to put together a strong med school application. Think of it this way–do you want to apply to med school as quickly as possible or do you want to apply to med school with a strong application that gives the best chances for an admission.)