Second what Sportponies said.... You should have some alternate career plans in life, and hedge taking other classes / your potential major based on other things you might like to do if vet school doesn't work out in the end, either because you choose 1. not to do it, 2. to leave school for any number of reasons, or 3. don't make it through.
You can always go back and finish a BA/BS later, even if you say, got into vet school with the minimum pre-reqs and then dropped out, although that would probably be more difficult and painful that just finishing a degree before applying in the first place.
The pre-reqs are heavy on biology and chemistry, would you be happy in, say, the pharmaceutical industry? Maybe gear yourself toward the chemistry side of things. More interested in public health? Spend more time on the bio-side of things. Industry sound fun to you? Maybe take some classes in business, marketing, communications, etc. Lots of companies and non-profits are looking for people with science backgrounds to do technical writing, sales, management, consulting, etc.
I should also add that I already have a bachelor's and a master's in non-science subjects. Part of the reason that the super accelerated pre-req program programs are feasible for many students is because they are done as post-baccalaureate programs. So, the students in them already have their time management and most effective study habits figured out.
Not saying that doing well right off the bat as a college freshman is impossible, but just something to have some introspection about. I was overly ambitious as a freshman and my grades from that year are on average at least 0.5 GPA points worse than any other year I have been in school. That type of grade improvement happens for a lot of people, so keep that in mind when you build your schedule, especially the first few semesters.