What kind of coating? You should look into getting new sliders from TNK. Racetech sells them. They might have what you are looking for at a better price.
I am still waiting for an email back from RaceTech in regards to the TNK sliders with Ti N coating.I'd still go with TNK sliders. It'll cost you half the money then. You probably only need new oil & dust seals since the rest is normally immersed in oil throughout it's use & your forks don't look high mileage in the pics.
Fitting the S&P lowers won't be all that difficult on new sliders. It's removing old ones that takes time & effort.
As for the uppers, do they really need re-anodising? Remember they're mostly concealed when not in use anyways.