Suggestions for making my F53 a little easier to drive

One of the cheapest things to do is to have your coach weighed to see how your load is distributed. This must be done when you are loaded for travel with all passengers on board.
You may find that you have a weight distribution problem. Most coaches will handle better if the front axle is loaded close to maximum. If the front axle is light, the coach will wander all over the highway.
Until you do this, any other changes may be a waste of time.