Are you planning this as a commuter or for the weekends? How much will you chop the top? Do you need the back seat?
As I recall, this had a 45mph top speed and 40 mile range, using a golf cart motor and lead-acid batteries.
You could start with a coupe, boattail it and have a single, centered rear passenger seat. But you
definitely need to use BMW i3 tires on the 4x19 Ford rims.
Edit: Take a look at this, the 1923 Farman:
Concept Cars and Aerodynamics, 1917-1940