Those type of kits are overlays and stick onto your existing trim. I would buy a small piece first and see how you like it, since it's definitely going to protrude on the edges.
Just take your trim off, degrease with Dawn, wet sand it with 400-600 take to body shop and give them paint code and finish spec (gloss, matt, flat). Should cost no more than $200. Make sure sand the edges.
All the trim pulls straight out toward body don't put it at angle or will break tabs.
Get a trim removal tool kit that has at least one wide semi U shaped end carefully slip it under the edge and in then pul straight out in abrupt semi hard movements. The trim itself will not break, just the tabs if don't keep a straight line.