Ask dealer for a discount as you have bought the car from them, I had roof rails and roofbox off dealer and got 25% off for aking what the best price was.
As you say you soon get used to them, at first they are a bit awkward but you soon forget they are there.
2017 GLC AMG43 premium plus, night pack, leather, intel lights, 360 camera, side steps. = sadly gone
Now GLE450 Premium plus, Selenite, Black/White Nappa leather, Tech plus pack, Driving assistance pack, Tow pack, Off road pack, 22 inch wheels.