I think you are looking down on Stalker of Kharash too much, sure going all 10 levels sucks but as a 2 or 4-6 level dip this is quite good. Opportunity cost going that 2 or 4-6 level dip compared to straight ranger levels I think this comes out at least equal, ranger level 12-20 really suck and are basically dead levels, also note that SoK's HiPS is strictly better than Ranger's and you have access to it significantly sooner. As a two level dip this is also quite a good class for rogue though a bit painful to get due to needing three feats.

Also taking Nemesis (Evil) is pretty incredible almost any build is better having blindsight evil 60' and +1d6 damage to evil characters. I think this should get 3/4 for the second group

For prerequisites going straight Ranger entry with Urban Companion ACF the character only needs to take Favored of the Companions feat, and a straight ranger even without Urban Companion only requires 2 feats so I think this is 2/2 for prereqs.

10/20 for Stalker of Kharash