good plan, stick a mk1 off the road, and it will break break and break even more. mine cert has. was almost trouble free as an everyday car, but now its being a little bitch. (i still love her tho!). cars love to be driven everyday, espesh older ones.
and why buy a 172 FF for an everyday car
cup would be the clever choice, or sensible choice would be any new diesel car. plenty torque, and true work-horses, and mpg is amazing!