Glad that you have them in and working !!

Do you know that this was only the first step to a full leather interior conversion? :-)
I am through the whole thing now. My advice would be: watch ebay.co.uk - leather interior is much cheaper there then on .com or .de - at least it was when I was hunting my parts. I believe you do not need that advice because you are from UK - right? And they sell the parts there in smaller pieces.

Big Plus: the rest is not as heavy as the 2 front seats

And since you said you had a bad back - do your seats have lumbar support? You can add that also "relative" easy and not too expensive.