Lovely looking car! I always loved the 15/17 range, a 1300 may be a little small these days, but its a car for fun, and the Renault engines always had more torque than others so it should drive reasonably well.
I keep tinkering with the idea of putting a larger engine in my 4l but I get 40Mpg and total reliability (if it ain't broke I aint fixing it!)