Hop you don't end up having to sell it.
But if you do and you need 4 seats and a bit of comfort/refinement along with a spirited driving experience, you need to know (apologies if you already do) that 12 year old QPs like mine were criticised in some quarters for being too ready to change down in auto mode. I love it though, because when I'm feeling inclined to change down and go at the drop of a hat its quite likely to do it for me, without the effort of reaching out for the paddle. But when I want to just glide around, it does, and the engine is so balanced that if it should change down, there is barely any perceptible increase in harshness, just more music from under the bonnet.
Oh, you mentioned the boot and may be aware that the 12 year old QP boot is small. True. But my wife and I went away with a week's worth of luggage with no difficulty at all. Everything in the boot. So I would say "small boot" is a relative term.
Seems like wins all round to me