Will this work with my factory bumper cover?

Yes. This bar mounts behind the bumper skin at the existing frame attachment points. Your factory cover stays in place.

Do I need to remove anything to install this?

You'll need to access the factory mounting points behind the front bumper. Some trim removal may be necessary depending on your setup — test-fit before final fastening.

Can I paint this before installation?

Painting before install is your call. If you do, mask off mounting surfaces to ensure a clean bolt connection and avoid paint flake interference at the frame points.