Want 10 year visa but no firm travel plans yet

Hello,
I am an American Pediatrician living on the island of Saipan. I will be visiting friends in New York city and was going to take the opportunity to apply for a 10 year visa to China, since we sometimes get Chinese tourist patients who get sick and need to have medical accompaniment back home on a flight. Also,I would like to eventually travel in China but do not have any scheduled plans yet. It it possible to get a 10 year visa without firm plans? How long would it take? I will only be in Manhattan for 6 days and would need my passport to travel back home.

Thank you for any information that you can provide!
Baby Doctor in Saipan