Hi there, I can't answer all your questions, but I can tell you this:
- for sure you will enjoy the power and torque!!! Who is going to do the remap? Just curious. I was at APEC Deinze.
- be carefull with bigger wheels: something like a wheel angle limiter might be needed. Check with your Volvo dealer.
- badges can be removed with dental floss after heating up the badge with a hair dryer. (did it before on other car)
- on spacers I have no answer, but be carefull with the technical inspection when you need to go there in a few years.