Do I need to prep and paint each piece separately?

Yes. Sand the surface lightly to promote adhesion, then mask and paint all four pieces before installation. Many builders paint off-vehicle to avoid overspray on the chassis, then install once fully cured.

Will I lose access to side jack points with the skirts installed?

Check your vehicle's jack point location before installation. If your lift points sit directly behind the skirt mounting area, you may need to use frame rails or lift pads instead. Measure your factory jack location relative to the rocker line to confirm clearance.

Can I install this as a complete kit, or do pieces need to go on one at a time?

Install order doesn't matter functionally, but many builders start with side skirts first, then bumper covers last. This lets you verify fit and alignment as you work. Take your time — FRP is forgiving during test-fit but less forgiving once fasteners are torqued down.