With an accounting degree, you shouldn't have too much of a problem getting a job as a CPA I don't think. I believe there is a need for accountants in the country nowadays.
However, you can probably find an education program to get you licensed to teach in your state. The only distinction is that most math teachers have degrees in math and not accounting. Also, I do not know how many schools across the country have classes for high school students that require a teacher that has such an extensive background in accounting.
So in that may be a problem, your accounting agree may not be broad enough, but there are many examples of teachers that have degrees in different areas than what they teach.
So just go with what you want to do.