Welcome! Good luck with the wife bro. You are not alone in having a woman who is ambiguous about the whole bus thing. I suggest you surf the gallery and discussion on this site and other sites, and find some other families with buses who are loving it, and share those stories and pictures with your wife. I found this one helpful:
http://errabundusbus.blogspot.com/. There is another family bus on this site - a long white cabover style - which has pics somewhere in this website and their own website. This site has lots of photos of really cool bus/truck conversions, some with families:
http://www.mrsharkey.com/.