If you're going to be doing headlight restoration, I'd check out Delta Kits. I use some of their products and heven't found anything better. There's a slight learning curve, but probably very easy for you.
If you haven't done many headlight restores, look to the forums for advice from actual users and practice.
If you have any non-profits in your area that deal with used cars, talk to htem about restoring headlights (of your choice) for free. You can streamline your method, try now products, take before and after pix (I even used a situation to shoot a video to use with new service providers).
You're doing them a favor and you can invoice them for your normal rate but discount it to zero, then apply it to your year end taxes as a contribution.
Used to also take new service providers to them for on the car training. If you want specific info, send me a PM.
ray6
Forgot to list typical charities that accept used cars:
Salvation Army
Goodwill
Polly Klass foundation
Kars for kids
These are just a few in the San Francisco area.
ray6