Hi Tom and Donna,
I think a checklist is important. I have a few links that will help. Some are generic but you can use them as a guideline and make your own checklist that will help you as you look for your Newell coach.
A buying guide:
http://www.thecampingsource.com/item.../category.aspx
A RV inspection guide:
http://changingears.com/rv-checklist-inspection.shtml
Like I said these are generic but they should help you get a list of your own together. Good luck with your search!