What about another situation: You are not a native, you speak english fluently but with accent. You can understand all students questions and can explain anything about aviation (ground and flight lessons). But you cannot understand slang or talk about other issues (sports, for instance). You became a CFI. Will you have a hard time to get students?
Should you look just for international academies (foreign students)?
Would young students (college ones) accept a foreign cfi?
Would old students (mid 40s and usually rich) accept it?

Thanks.