I'd say:
1 pip: bastard sword, long sword, two handed sword, katana, scimitar, halberd, flail, crossbow
2 pips: axe, dagger, war hammer, club, spear, quarter staff, longbow, shortbow, sling, dart
Not sure about short sword and mace. They're both weapons that one would not find or make in the wild, but the techniques are similar to "2 pips" weapons (dagger and club, respectively).
About weapon styles: maximum pips for all of them, except maybe sword and shield? Not sure about that one. Not that it matters too much, since nobody actually seems to use that weapon style...
I wouldn't say this particularly underpowers the Feralan. Dual-wielding axes or war hammers, or using longbows, he can be quite a formidable fighter...
About armor restrictions: I'm doubtful. Would it be possible to only have him be able to use Hide armor? It seems the only appropriate type, since even Leather and Studded leather would be unavailable in the wild.