Do I need to remove the lower valance before installing this bumper?

Yes. Remove your OEM lower valance first. Check that all factory mounting points on your existing frame are clean and undamaged before bolting the new cover in place.

Will this bumper cover work with my factory fog light openings?

This bumper is designed with factory fog light cutouts. Verify that your vehicle's OEM holes align with the panel openings before final installation.

What should I use to prep the surface before painting?

Sand and prep the surface with appropriate grit sandpaper before applying your chosen base coat and clear. Reference your paint supplier's prep requirements for best adhesion and finish.