Since I have experience on vinyl wrapping, I am all for customising a car to your personal taste but I don't think the white roof looks right. If you are thinking about doing the roof you should go for black but I think you will need to do the wing mirror as well.
As for the lacquer peeling off as mentioned by Grahameo this can happen for 4 reason.
1 - New/recently painted panel
It is advisable not to wrap if its less than 6 months old. The reason is the paint might not fully cured and then has a risk of lifting the lacquer when it comes to removing the vinyl.
2 - peeling/bubble of lacquer
. If you notice any defect on the clear coat on any part of the car then chances it will lift up when you remove the vinyl.
3 - Wrong method of removing vinyl
. Once the vinyl is applied naturally the adhesive will cure in time and therefore hard to remove. If you decide to peel the vinyl from the without softening with the heatgun then yes you are more likely to cause damage. It is important that you heat up in small area and lift slowly that way no damage will be done
4 - Cheap vinyl
. There is a number of brands out there that offer quality vinyl so don't go for cheap vinyl sold on ebay as you don't know what type of adhesive is use and therefore can damage the car when eventually removing it.
There are many types of vinyl out there so make sure you stick to the one specifically for cars. Like with anything do your research and read more on this topic so you fully understand how it works. As long as you follow the right way of applying and removing of vinyl then there should be no problem.