The lower air intake does look more aggressive, but it'll be down to how much the package costs. With the features it adds, I can see it going for 2-3k extra and that's not something I'm willing to pay for what they're offering.
Even if that is off it's not nearly as much of an issue as the bolt pattern being different, you can always get a spacer to compensate.
With how long the Q7 has been on the market it shouldn't be hard to find a used set in good condition for cheap or just ask around on some Audi forums.
No no I meant center cap lol, I'd rather swap over a circular center cap directly than have to put a cheesy sticker over it. To get the rims to say VW instead of Audi. Finding some good condition oem wheels won't be hard at all though. Like you said, forums, or eBay, there are tons of people are selling them.