Admiral 346,
Making a statement hoping that ATC will correct you if you are wrong is very unsafe. In a busy ATC environment or one where English is not the first language of one of the parties, it is more than possible that the "error" in your readback will be missed. The examples of this are numerous. In any situation if you are unsure of exactly what is required or what your clearance is then the only approved method of seeking clarification is to ask a direct question, as unambiguously as possible.
TC