Hey Marcus,
In terms of concerns none to be had afaik, I've watched this for a while and its 99% due to colour.
The solar flare is very niche and personally I'm a huge fan, standard imagery doesn't so it justice but my local lexus has another car in the same colour years ago and I've never been able to get it out my head.
The last orange F car that got sold was sent straight to Yiannimize and then wrapped in purple, and a similar story sat on a forecourt for a while.
Another thing is 100% to do with coat of living and larger capacity cars, 2 years ago my wife wouldn't of stopped me buying a moving power station however, now days the sales are being "spouses" a lot more & compared to a year ago people were convinced the costs would drop fuel, home bills etc. But there is no end of that in sight
In terms on negotiating honestly I wouldn't hold your breath to much, Swindon over the last 12 months have purchased and sold the most F cars out of any UK dealer, they know what they look for when buying stock and are superb to deal with also.
You've mentioned luxuries a few times:
Heated / cooled seats are there and the lexus F seats are incredible.
The infotainment system is trash and you'll want to retrofit one.
Heated steering wheels again retrofit but I would highly recommend Elvin Carbone fibre his wheels are stunning personally better and look just as good as stock. You wouldn't have a clue it was OEM.
Driveability the rcf is lovely, you can take an F round a corner sideways or drive it within the law with no feel like the car is punishing you