Advice for Prep Work for Painting Grill - I'm Scared

[jb3t]

quick question... I am about to embark on painting my grille and head light bezels. While I'm a pro at prepping and painting metal parts, im a novice at restoring plastic parts. With that, can anyone give me any tips on prepping the plastic. Note from the picture, the bezels have some bubbling.

I'm thinking...

- clean with soap and water.
- light sand with like 800 grit.
- clean and repeat.
- bust out the silver wheel point and hit it with 4 coats.

Is sanding safe? And what grit?
Do I need to prime?
Is there a good way to shoot it? Front, back, side?

Thanks.