that is amazing its not rusted away!
I had one exactly the same as one of my first cars 77 1.1 S with the stripey seats, it had a rotten floor and sills but that was way back in 1987.
So it had barely survived ten years cant imagine how a mk1 fiesta survived as long as yours - good to see it saved. I'd go for the supersport look - round headlamps, tailgate lip spoiler, side stripes, red check seats.