Repaint question
How long has the paint been cured? How many coats of clear are on there? You can run into excessive film thickness which makes chipping more of a problem and peeling too. Ask me how I know.
I would hard block wet sand with 320. Let the hood sit in the sun for 24 hours to make sure the paint gasses out completely. Then sealer to get a uniform base before BC/CC. For a metallic I would finish sand to 600-800 before BC/CC.
I'm using 50% reduced epoxy as my sealer coat before BC/CC. Supposedly gives you better chip resistance.
Maybe some paint experts will chime in.
Good luck.