Cupra Ateca rims/tires problem

Hello, since my Cupra Ateca is already being built this week and the delivery date is December, I actually need winter tyres. So I had looked on the internet and also had contact with a tyre or rim dealer regarding winter complete wheels. But now the problem. There are apparently no rims that have an expert report for the Cupra Ateca. So also no possibility to buy some, except possibly at SEAT, if you can get the Cupra rims there. But also this is What would you do? I am now on top of all weather (which here: https://www.oponeo.de/…/nokian-weatherproof-245-40-r19-98-v-xl?…) Because I don’t have much choice. Alternatively, I could do winter tyres directly on the existing rims with which the car is delivered and hope that at Easter so tyre change time there are finally rims with expert reports for the Cupra Ateca. What would you do? Had someone ever had such a hard time. A problem?