We don't know that Charles will take the regnal name and numeral George VII. There wouldn't be much point, since no one will ever think of him as anything but Charles.
As for Camilla, we also don't know exactly how the coronation will be conducted, whether she will be crowned or not. My suspicion is that the traditional ceremony is going to be pared down, simplified and shortened, largely because today, people just don't have the requisite patience and attention span for the old, hours-long and very elaborate event. If that happens, and if she's going to be using the title "Princess Consort," it may be decided that crowning her isn't necessary.
It would be a smart decision, since even though crowning the wife doesn't really mean anything (she'll be queen consort whether she's crowned or not and regardless of what title she uses), the Dianaphiles are likely to squawk with hysterical outrage if she's crowned. Why give them an opening? They're tiresome enough as it is.