As I said i´ve already got the panels I need from Hadrian (carpanels.co.uk) Both A posts, inner and outer sills, footwell and strut tops for both sides, 300 euros the lot. Car cost me next to nothing and should be worth about 5000 when finished, don´t think i´m that crazy!
Sounds like a good project to me. I know where you are coming from with the windscreen leaks. My Renault drips on my foot when I go around corners. Would have been much easier to fix the trouble about 5 years ago (I was busy).
If the structure has some strength definitely the A-pillar first - should be possible to line it up nicely which will avoid troubles later on. Post photos as you go along.
Thanks Malcolm, will try and post some pics as I go along (even if it falls apart! i´m not proud) Those Renaults are cool, about the only classic I see regulary here, there´s hundreds of em.