F Sport comes with memory seats so maybe that'll suffice. When I loaned a more basic model, I really missed the memory seats. If you haven't experienced it, you may not miss it, but if you have, you may really want them back.
£16K for a Premier seems a fair price if it's the age you say it is. More than that, I'd say it's not worth it. It's coming up to the end of Q2. Perhaps there's room for a steep discount if you can promise them you'll pay and collect before end of June.