I Would Like To Become A Secondary Education Biology Teacher (6th-12th)…?

and I would like to know a little more about it from an actual teachers perspective. I understand I have to speak to my College counselor about it but here is some information about myself…
I will be just starting college in September and I will be 20 years old. I have no prior college credits or anything (I have my High School diploma and all…) I decided to take 2 years off to decide thoroughly what I wanted to do (Not sure if it was smart or not so I hope I am still young. enough to pursue this career well. Currently I work at a Daycare for kids from 10 months to 13 years. Ever since elementary school I have been interested in Natural Sciences and such. I was a huge Magic School Bus fan as well as Bill Nye among many other science programs. (Just to give a little childhood background) I’m not great at math by any means. I do very well in Englsh, History and also love to do some Art as a hobby.
Now for the questions (thanks to anyone who reads and responds by the way…)
Am I young enough still to pursue this? Will I have a disadvantage because I have not completed any coursework at all?
How was the journey through schooling? Was it horribly difficult? I’m up for a challenge but would like to know if I will be able to work at my Daycare while going to school.
Will working at a Daycare provide me a slight advantage? I understand that it is not High School students and that they are MUCH different to deal with but will it look good on a resume? If not, what jobs should I look for? (I have no teaching cert. at all so an assistant is out of the question for right now)
What courses are required besides the obvious Biology? Will I HAVE to take Chemistry or Physics or can I take Bioloigy and Earth Science? Is Math THAT important? I can do basic things and probably a bit more if I really focus but the word Calculus scares me!
How is the pay for a Biology teacher? I do not want a job based on pay however, I would like something that will obviously feed me and allow me to be independant from anyone (I want to be able to ALWAYS support me myself and I even if I do have a spouse I want independence so I don’t end up stuck in a rut)
I have patience and from making a list of things I would like to pursue for myself in the future a teaching job seems the correct path for me to take. I have thought about it and reviewed my pros and cons and this is what I would like to do! And YES I have patience for kids and I am also a kid myself (at heart, ALWAYS will be!)
Thanks for your responses in advance. I just want to have an informed decision from real world people and not just some college counselor.