After a mammoth effort, Ozan and my seats are done (pending a few little cleanup steps & replacing back seats).
They look the goods, I will upload some pics of work in progress & the completed product.
Depending how much I'm feeling like a perfectionist, I think I may redo the rear seat-back (the far driver's side strings) as they could line up a little nicer, but in general very happy with how it all went.
My niggle is that the embossing on the rear driver's side is imperfect, probably an inch or so offset so looks askew.
Final stage will involve the door trimmings and parcel shelf, and whatever else I think of if sufficient scrap material remains.
Cheers to Jetdat for organising the buy and Ozan for providing the workshop & extra set of hands where required.