Sure, my trim is called "Nappa/elfenbein-weiss (LZEW)" on the VIN decoder site, so that's what I stuck into the order form on the liquid leather website. Don't forget the website pings up a 10% discount code too if you try to leave, will save a few quid.
Need to be a bit careful with the alcantara - and it does get dirty unfortunately from the seat belt. The only product which clearly stated it was safe for use on alcantara was the 'gentle cleaner', which does make sense - I got it nice and wet with the cleaner product and then gave it a gentle-ish scrub (don't want to be too rough as it may 'bubble' the alcantara like an old jumper) - it has definitely come up looking a good bit cleaner. Due to the nature of that material, it's good to give it a very quick brush with your hand when dry to make sure it's all pointing in the same direction and will be the same colour.
For the other 3 products, need to steer clear of the alcantara completely.
I'd say 85% of the seat was covered - I didn't bother with e.g. the 2 stripes that go top to bottom either side of the plastic section on the rear, and didn't pay much attention to bits that you just can't see like underneath the cushions at the front, or the 2 side bits which press against the centre tunnel either side.
Saying that, most of the coverage was just a quick pass over - probably 2 coats. Any 'problem' areas, of which there were many (quite a few marks, scratches from jeans, plus the creases from general wear on the lower cushion and bolster) had *many* coats - basically as many as it took to get them looking good. Don't despair, as the first couple of coats will look rubbish and will NOT cover the marks.
I dabbed mine on with a lint free cloth - the bottle says you can also paint it on, or wipe it on (I tried wiping, it just came straight off), or spray it after diluting with 20% water; not sure how good an idea spraying would be though unless you mask off the alcantara.