Zug Zug, for Dunadain characters did you want us to use straight PHB humans or one of the versions from the MED20 conversion site? The versions there are:
1) Dunedain and other Numenoreans: as per D&D Half-Elves, except NO Low-Light Vision; in exchange, they get the extra 1st level Feat and extra Skill Points available to normal humans.
2) Dunedain (Men of the West)
+2 Presence (Charisma)
Medium-size (6' to 6' 6" tall)
Base speed 30 feet
+1 bonus feat at 1st level
+4 bonus Skill Points at 1st level and +1 bonus Skill Point per level thereafter.
Automatic languages:
3) Numenoreans: As D&D half-elves, with the extra feat and skills of a human
As for stats, I'd probably rather a point buy or if you just allocated a certain spread of stats to everyone, the temptation to overinflate stats is sitting before me like the dark side
Also, where should I look for more on Halbarad?