This was my situation:
I was going to take the MCAT last summer while taking biochem 1 over the summer. When i took practice MCATs, i noticed A TON of biochem, so I was very thankful I took biochem in a class setting. However, long story short, I didnt feel prepared to I pushed off the MCAT till jan.
I just finished taking biochem 2 this semester, and again, I noticed a significant portion of it on the practice MCATs I've taken. Additionally, my friends who took it noticed a lot of biochem 2 on the real MCAT.
That being said:
I recommend taking at least biochem 1 no matter what. You could pull off self-teaching biochem 2 if you truly learn all about the enzymes for all the pathways and what they can do. However, since i don't personally know your work ethic, i guess it is possible to do biochem on your own. It was easier personally for me though to be "forced" to learn the material for tests and homework assignments.
in terms of your organic situation, I am not sure if possible but if youre desparate to get it out of the way next semester, try to find a community college or something you can quickly enroll in and take it there? it might be too late at this point haha but, as mentioned above, its a good idea to have solid ochem 1 foundation before moving on to 2!
Good luck mi amigo, all will work out for you