Remember, you still need to take care of the clear bra - clean it, wash it.
No matter what others will say, you will get dirt and grime right where bra ends, on the edges. Also, keep in mind that over time it will look different from the day you got it installed and will have imperfections. By that time you would wish not to have it.
I understand the idea of protecting the car, in my opinion you are better off focusing on good detailing then installing clear bra.
Keep your car ala natural the way it ment to be.
And if you get rock chips or over damage then you can deal with it when you get it, its not like those things are not fixable.
Different things for different people, in my opinion, spend money on good detailing with clay bar and protection on top then installing clear bar.