if it's any dual motor version then it should come with a frunk mat and floormats otherwise worth ordering those too.
wouldn't bother with a boot liner unless you transport things which gets lots of grass etc. in there
I can second that recommendation. Be aware that the rubber mats have a strong rubber smell when first taken out of the packaging. I let mine air out in an open space for several days before putting them in my car, which seems to have eliminated the rubber smell.not sure which version of the car you’re getting but i got floor mats from NextDayCarMats for £40 and they are good enough.