Buddha_Bellies is right. It can be costly and not all switches are straightforward. Going from a double to a triple especially. (Changing between doubles can be easier, but certainly not cheap.)

We're going with no racks (save for my 7-litre saddlebag and perhaps one on my sweet partner's bike as well) and... a car. (Although driving in the mountains should be fun.) Pictures to follow... in many months!