As I am about to start working on a Bus conversion, I'm finally ready to publish my research notes on choosing a bus for conversion. I'll have more to say later when I have more actual experience doing a conversion, but this material should be of some interest to anyone thinking of doing their own. I spent considerable time looking at buses and reading both school bus and professional bus driver forums before we made a purchase. Specific information on equipment will be largely applicable to the USA.
I grew up a poor white boy-child in Santa Cruz, which means that there were three ways in which I was privileged, and only one of them was location. Growing up with a single mother with no car when surrounded by the affluent and mobile meant that those were the only ways in which I was privileged. Any place I did not reach via operation of my Chevrolegs had to be visited via the shame train, also known as "The Bus". And riding the bus incurs a stiff penalty.