Don't get me wrong, I admire you for doing it, saving an old car is always worthwhile, but modifying? Now you see, that's the bit I just don't get. Why spend all that time making a VW into something acceptable, when with the DS "from the factory" you are getting a ton of style, and the greatest step forward in automotive design ever.
The first production car with disc brakes.
The first with adjustable (rising rate) suspension.
The first with a working semi-automatic gearbox.
The first with designed crumple zones and an engine designed to go under the passenger compartment in a frontal accident.
If you get a post '68 car, the first with steering headlamps.
Oh, and if handling's your thing, it's (technically) mid-engined, and the different sized tyres front and rear make the handling neutral (neither excessive over- or under-steer).
And if you get a blowout at 70+mph (I've tested this one) all that changes is it gets a bit louder in the cabin.
If you don't believe me, see what Mr May has to say about it
here.