***** NOT A TEACHER *****
Hello, Innocent Lady:
I agree that you should decide on one accent.
Then please remember that accents vary in a nation. If you choose to speak "American," then you will want to
choose which variety of "American." For example, here in California we pronounce "car" as "car." But I hear that
in New York, they do not pronounce the "r" in "car." I am sure that you have heard the difference between the
way people speak in the southern part of the United States and the way they speak in the middle of the country.
Of course, I know nothing about British accents, but I hear that one's accent in the United Kingdom can have an
important role in the success or failure of one's career. So if you decide on a British accent, be sure to seek good
advice so that you choose a "good" accent to adopt and emulate. (Maybe it is changing today, but I have read that
in the United Kingdom, people know what social class you belong to as soon as you start speaking.)
Best of luck on your decision.