NC Mckinley full top grain pure aniline maintenance

[NYGUY]

Hello all. Long time lurker - first time poster after purchasing a used leather set from an NC company I read good things about here on the forum. I was looking for a set that was 8 way hand tied, made in NC (where i grew up and where I grew an appreciation for quality furniture) and wanted a nice set for a bigger place I just moved in to

Its a Mckinley Frazier sofa thats about 8-9 years old. Still in production. I was able to ascertain the info regarding the leather choice that the original owners chose. "harness chocolate" - an "L5 top full-grain pure aniline leather" and I'm wanting to take care of this set. The original owners didn't mention anything about regular conditioning/treatment of the set so its long overdue I think.

There is so much info on specific leathers requiring specific kits for regular maintenance and I knew I could come here and get a proper recommendation. Another part of this inquiry is regarding UV ray protection. I live in a place in upstate NY that has a big A-Frame window that shines light directly on the set. I know that I need UV film but I have no Idea what company comes recommended and this is something that I need to address before anything else I think.

I'm attaching 2 photos of the set - a sofa, club chair and ottoman and a photo of the room to see the sunlight predicament i'm having. I've been surfing around and at the end of the night i'm always scratching my head wondering If i'm ordering the right UV film, the right treating kits for the leather etc. Im also attaching a photo from Mckinleys website on the leather used for the set for reference.

A side note - The set is really comfy, and pictures don't do it justice - the chair is in better condition than the sofa but i'm wondering if new foam cores/stuffing is needed? or if thats something that can wait. In any case. I very much appreciate any advice