Hi mate i personally would say if you need a reliable car to get you too and from work then dont buy a S2.
Like you say they are 20 yr old cars and things go wrong on them due to age.
I was like you i wanted one for ages and ended up getting one,but it just wasnt reliable enough to get me to work and back,but when it did i loved every second of it.

I ended up selling it, but now 8 months later i have just got another one,but i also have got a little fiesta to get me to work and back.Is this an option for you?

But dont get me wrong if the car is running sweet,it is such an enjoyable fun car to drive!!!!!!!!!!!!!!!