Adding wargs is a good idea, as your army is small and will tend to be enveloped by any force that isn't ent heavy elves. Some wargs are good so you can add a supporting charge in the flank of a unit when you charge your monsters in.
You might also want to upgrade some both of your shield goblin units to Blackshields. The extra strength and Defense are handy, as is the AE. To bump up your army to 2000 I would run it as:
Epic:
-Durburz (70)
- Druzhag (100) - Use this guy to Entangle and Guide Arrows. These are the two best spells in Wilderness
IMO.
Legendary:
- Burdhur (125)
Common:
-Goblin Archers (2) - 40
-Goblin Archers (2) - 40 (Cast Guide Arrows on.)
-Wild Wargs (3) - 60 - Chieftain (+50) - Outflank and Attack.
-Wild Wargs (3) - 60 - Chieftain (+50) - Outflank and Attack.
Rare:
- Dragon - 400 - Upgrade to Spellcaster (+75) - Spell caster on a dragon is a must, Bolt of Fire and Shatter Shields are your friend.
- Balrog - 500 - Another M3 spellcaster, perfect!
- Blackshields (4) - Captain, Drum - 205
- Blackshields (4) - Drum - 155
Fate: Balefire Arrows - 25
Total: 1955, yes you have 45 points left, dont spend it all at once!
SW