That's an okay list.

Instead of a face mask get, and wear, a couple of big bandanas to act as a filter when you can't stand some of the smells. Unless you grew up on afarm you are likely to be overwhelmed at times. A dab of eau de Cologne on the fabric from time to time may help too.

Since you are an American and Texan they'll think the bandana is national dress.

A money belt is old hat, but a useful decoy, put a few bills underneath the insole of your shoes for real emergency funds.

Be cautious but not be too afraid of eating local food. Go for the soups and you probably won't need the Immodium.

If ordering local bottle water make sure the bottle is brought to you unopened and you open it not the waiter. Mime what you want and reject it if you done get it done your way.

My wife manged to live and travel all over China for 4 years and dragged me and our one year old from North to South with few problems 12 years ago. Things should be easier nowadays.