First bit of advice, is if you can, really try to keep the existing seats. Unless you find the right buyer, which isn't easy with our cars, resale with bucket seats will be a tough ask and you'll most certainly have to lower your asking price.
On the plus side, my car had Sportster CS seats from a Lotus in it by a previous owner and he got a really low seating position. He really rated them. I'm still in touch with him, so I can get advice on the set up should you wish.