There are many varieties of floor plans out there, start looking.
You are looking to carry six people by my count and that is not tough. But, some of your conditions are. Getting the room to manage a severely disabled person is. A Class-A with no slides will give you the most room to manage things on the road. Slides are great when you are stopped, but in some units, the slide inhibits access to the kitchen and bathroom (not good planning in my book).
Do Not fret about California emissions test. Most engines that have not been messed with will pass. If you end up buying a 49-state that doesn't pass CARB, then sell it in Nevada. If you decide to buy in California, then require the seller to provide a current CARB certificate. It is transferable if it is recent enough.
As you will be buying used, just be certain the owner did at least the required maintenance. There are used coaches out there that are better than new.
Two very important things to be aware of...
1-If a unit has any detectable water damage - walk (run) away.
2-Tires last 5~7 years and regardless of wear must be replaced or body failure may result and the expense of this damage is far more than the cost of tires.
If the unit is more than ten years old. The brake system should be flushed, and the LP tanks may need to be recertified or replaced (neither is big bucks).
I wish you well in both your travels and your life.
Matt
