A Task for the Red Wizard

the Story
the Red Wizard, Tarnius (Tolkien forgets to mention this guy) approaches you.
"Welcome captain.  the leader of your nation... it seems has decided to let you prove your proficiencies.  I must remember to thank that one on our next meeting.  I see you have gathered the forces necessary for the mission at hand.  All in the name of your people.  Cultivate your force for soon you will have need of a much larger army.  the enemy is at hand.
“To start here is a quest of dignified cause.  Recover the lost books of Eridoriadum.  It is said two Trolls guard these among their treasure.  This map will show you the way.  I will send a messenger to gather the book and guide you to your next quest.  Now make haste, the time is short.”
Overview
You force must retrieve the treasure from the troll sisters.  the sisters are not getting along right now, so will be in separate parts of the caves (at least 12" apart).  the trolls will not move until they see the intruders or the other troll enters battle.  Aaron will bring or I will borrow his caverns.  We'll have plenty for up to 4 games, maybe more.
Players will be separated into partners and each player will take turns playing the trolls while the other enters the caves with his or her forces.  We may start with a practice game for everyone to refresh the rules.  the encounter is purposely short to facilitate this.
Army size
 150 points (need to purchase your captain with this)
+10 for all figures in the army painted (relatively few proxies)
+10 for bringing a one or more painted Cave Trolls
Special Rules
Included above.  No mounted figures in caves.  You can purchase mounts in future encounters.  Mounted figures allowed - these are tall caves the trolls live in (we won't always be so nice... my precious).
While there should be rules for darkness or torchlight for simplicity I am skipping those this round.
Campaign Rewards
A surviving victorious captain will find a special enchanted weapon giving them Strength +1... be careful not all is always as it seems.

Route - 0 Cave Trolls fall
  - you call in on a favor, your last, replenish your dwindled forces with 100 points

Draw - 1 Cave Troll falls
  - you empty your remaining funds to regroup and rebuild, add 80 points

Victory - 2 Cave Troll heads, one in each hand
  - enchanted weapon and the books
  - your deeds travel far, refresh your forces with 50 points

Maximum army size after First Encounter - 200 (220 with painted army)