Just would like to not see someone struggle with the MCAT because they took it without the pre-reqs. Again, my apologies for looking out for you. I'm pretty amazed how someone can act like you have to someone offering advice.
Anyways, no, I had not taken the MCAT without all my pre-requisities. But I did take the MCAT and could see how important various pre-reqs. I have also worked with several students who have not had certain pre-reqs completed and helped them overcome that obstacle - some successfully and others unsuccessfully. But I know absolutely nothing about this, as you can see.
https://www.aamc.org/students/applying/mcat/preparing/
Take a look at those topic lists. Circle things you don't know and evaluate whether you think its a wise decision. Just because another student did well without a pre-req, doesn't mean you'll do well and vice versa. Additionally, considering every single school is different.. you may be in a better/worse boat depending on how your pre-reqs are structured. I'd suggest finding a syllabus from the pre-reqs you will be missing and comparing those topics against the topic list to see what you will have to teach yourself.
Then you can come back here, tell us what topics you will be missing and ask whether people think they are possible to teach yourself.
THAT would be approaching this decision wisely. Just my (obviously very unwelcome) 2 cents. Ignore it if you wish but stop acting like anyone who isn't explicitly catering to your eery need isn't trying to help you out. Only reason I even posted in this thread was to lend advice.
If you want, I can sign up a new account.. state I took the MCAT without the pre-reqs and post the same exact advice since seemingly that is the only way the advice is valid.