Medium wheel base, high roof. She was a completely empty van when we got her and it has taken us 8 months to convert, amongst many mini adventures, before we took her to Europe on our first big trip.
148" wheelbase and high-roof. I decided to prioritize just two things: Park-anywhere (look like a standard cargo van outside, be of a standard size). True tiny-home (cozy interior, have good amenities, allow me to do work).