its good that u understand competition will be rigorous. because it will be
like other ppl have suggested, 6 kin courses + 2 bio + 2 chem is definitely doable, but u must always be on top of everything. it gets tricky in bio and chem (IMO) because tests and exams are multiple choice (and while u think u know ur stuff, there are always random questions that test ur ability to recall tiny details from the first week of the term than ur overall understanding of the concepts).
that being said these courses are very interesting and taught by some of the best profs at mac, so u will have a good time in these classes.
bottom line is: DONT PROCRASTINATE. attempt to review everything every week. make learning fun and enjoyable by studying with a group of fun and dedicated students...AND JUST HAVE FUN.
I was in Life Sci, and I came into uni overestimating myself and took a lot of sciences and maths. at the end, the result wasn't so great because i had horrible time management skills.
good luck in your program, and if u get accepted to life sci as well, i would recommend that u stick with kin (it is more fun than life sci imo)