If you want to do it , you can achieve pretty durn good results with two products by U-Pol .
~ Problem #1 is you would have to abrade the area further with 600 grit wet/dry 1st to ensure it does not lift off eventually ; so that it adheres properly .
Anyways , you would tape off the section you are spraying approx 8" further than you are spraying and have wetsanded . the areas with the paint chips would receive 600 grit ( Ungrit preferably ) and the " fade-out " areas would get 800 grit unigrit . 800 grit would start approx 3-4" past the reapir area .
You should spray all the way across , but lift the can off of the car before you get to your 8" tape line mark so it blends in and doesn't leave a prominent line .
Then you would use
http://levineautoparts.com/upsys20fadou.html after you remove the tape to fade out without having to wet sand the " overspray " away at the tape line .
Even though you are fading out to that point , there still would be a stopping point visible by the taped off / masked off area of the spray .
The only quality clear that I know of in a can here >
http://levineautoparts.com/upclear1uvre.html
Then you could wetsand it with 1000 grit in a few hours and do another coat even if you like or just knock the orange peel out with a leveler and pad and call it a day .
You would then have to wait for it to cure though until you put your clear bra on .
~ problem #2 - it could be up to 60 days if the car sits in the sun daily simply air curing