Ok guys I'm close to being done making changes with my K-1 C SF.
Cosmetically, the plastic bridge pins were replaced with some cool boxwood ones with zebra wood dots. eBay seller "taisamlu" carries the same 2L/2R tuners that Kanilea uses (exact same actually, they have the same branding engraved on the back plate facing the headstock). I picked up some walnut button ones to replace the black plastic ones.
Sonically, I replaced the tusq nut and saddle with some bone ones. Man, shaping these things from guitar ones is torture on the fingers lol. Intonation is good (off by a couple cents max using a Samson CT20 clip on chromatic) all the way up the fret on each string. My G and A initially sounded a bit tinny at first, but are starting to settle. I'm not sure if the change in the G and A tones are because of 1) the bone vs tusq, 2) ever so slight (fraction of millimeters) gap in the saddle slot, or 3) they need compensation. I'm going to role with it for now and see if it continues to bother me. As far as action, I'm at about 0.03" at the 1st and 0.095" at the 12th (yea, I know, I mighta gone a little crazy sanding down the saddle). I might bring the 1st down a tad but for the most part, I'm liking the volume I'm getting at this height with no fear of fret buzz.
Pics and hopefully a sound sample if I time coming. Hopefully this will be helpful for anyone else wanting to make changes to their K-1 C SF.