Starting my access course/ help please need gcse math/ English too

I have my interview Thurs for an access to higher education humanities and social science, i want to be a primary school teacher. Next yeat start university if all goes well! Im so deternined nothing will stop me! I have emailed my preferred university and they have advised I will also need GCSE maths and science ,i have english already. I have found a locak school who except private candidates and will put my name down for the summer 2016 exams. I have a few questions do you think 4months is enough study time to be up to stract? I am prepared to study loads and really commit/ of course i will have to give 100 percent to my course too as i will need distinctions/ merits, i also have a one year boy and plan to work 16 hours(2 days) a week too. Im really excited/ nervous / determined . Any advice/ info would be apreciated . Sorry to go on soo much lol. Cheers everyone