Clear Coat Paint Issues

I just bought a 2004 base model, 203,000 miles, in the medium to dark blue color. The hood and the roof (due to sun damage I'm guessing) are both severly discolored and faded, and the clear coat is flaking off. Instead of shelling out several hundred bucks to get a body shop to match the paint and clear coat it again, I thought a good solution would be for me to wet sand the hood and the roof with 400 grit sandpaper to smooth it all up, and then take it to one of those places that does the custom advertising wraps or the "flip-flop" wraps. (The latter being where the car has a chromatic looking main color, but as you walk aorund it or it drives past you in the sun, it changes color, which is groovy for some, though not at my age LOL.)

Get the shop to cover the entire hood and roof only with a wrap that is either close to the paint color, or a darker grey or black with a (probably off the shelf) carbon weave fiber look to it. Your advice and suggestions welcomed and thanks.