Hi JBD. My first post here, despite having had a MB for 12 years

(a C180K coupe special edition with leather seats, which has been a great car but getting a little long in the tooth and about to become expensive).
I have ordered a GLC 250d Sport Premium Plus, Iridium Silver, Black Artico, due at dealer in October.
Obviously I've not seen or driven one of these, but I know you have, so I'd be grateful for your thoughts on a few points if you are willing (the spec amend date on my order is 31/8):-
- is non-Airmatic suspension going to be a mistake? I'm coming from what is presumably a fairly firm suspension on the coupe, so I'm guessing the standard springs should feel relatively OK to me? Most of the reviews say they didn't get a chance to try the non-Airmatic.
- on a similar note, I'm tempted by the AMG line spec which apparently includes "sport" suspension (as well as the bigger alloys, more chrome and a funny shape steering wheel) - presumably even firmer? Difficult to assess the "look" properly as lots of the available photos seem to show non-UK mixtures of features.
- I've not seen any Artico seats before. I have enjoyed the leather seats in the old C-class. Worth the upgrade? Go and see some in a saloon in a showroom is the answer, I guess.
- the 360 camera looks useful, but another £350 or so and as others have said where do you draw the line?
Will be putting this on a PCP through my bank, which appears to work out significantly cheaper than the Agility quote a dealer gave me (similar monthly payments but much lower balloon price). Will also be selling my old 180K myself, the trade-in offered by the dealer was less than half the offer quoted by a well-known company which offers to buy any cars.
Thanks for your help/thoughts!