Welcome! As far as your must-haves, there are very few 19's around to go up for sale. You can surely find one but do not expect to get those items on it, however. The item you did not mention that many would want is insulation. As far as A/C, foam, and dual 6-volts, they can all be added. All Escapes in recent years are A/C ready so you can check that. It is easy for you to go to Escape and get any of those, or other items you might want, after you find a 19'. Foam is not that likely to be on one that comes up but may. Good luck!
Cathy. Floating Cloud
"Live in the sunshine, swim the sea, drink the wild air.... "