Spent a whole day searching eh? You're doing it wrong.
Try harderRace: Whatever
Leveling order: R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R,R
Feats: Look at Ranger wiki. Take whatever feats are not auto-granted that gives damage or melee power boost. Add empowered healing and maybe quicken.
Shouldn't need anyone to point this out to you but Dex is for scimitars (it's discussed ad nauseam in the build forums). Str is for khopeshes.
Kill stuff.