:ooo:
lol you nailed that one.... im running roberts male v5 variant http://www.tesnexus.com/downloads/file.php?id=32765, hgec, and natural faces
so what would be the best order of installation and and override?
It's just a matter of racial settings. Installation order doesn't matter much here, as those mods don't replace each other's files (provided the V5 Variant package doesn't contain wrong Khajiit textures or wrong settings in an ESP, as I can't take a look into this .omod to figure it out).
The key is to have the right racial settings for Khajiit in the end. I don't know if the package of HGEC you're using contained any ESPs, nor the Natural Faces one, but for Robert's Male Khajiit one is vital.
If there are more than 1 ESPs with possibly conflicting settings for Khajiit you'll either need a compatibility patch or Wrye Bash's "bashed patch" correctly configured (my personal preference). Luckily nowadays B.O.S.S. provides the proper "bash tags" for most plugins automatically while properly sorting your load order, so there's not much to explain or to instruct anymore.