For Skills, I would recommend specing into Poison Javelin, Plague Javelin, and Javelin & Spear Mastery. After which you can also spec into Valkyrie. Another one you can spec into is Evade as it synergies with Plague Javazon very well.
The idea with this build is to improve your Poison dealing abilities and kiting around enemies. So Speed and Evasiveness are what the build is focused on.
Specing into Stats is pretty simple, Put enough points into Strength and Dexterity in order to use your gear. Once that is done you can dump the rest of the stat points into Vitality. We only need enough Strength and Dexterity to equip and use our Gear. Vitality is what will carry us as the extra Stamina and Life will help us survive and evade many monsters.