No, I am not wrong. If there are 3 cards stacked on Preparations, then you can place 3 wounds on minions skirmishing that Dwarf in any combination you want.
Definitely use The Ring of Rings, and 2 of your sites should be Osgiliath Reclaimed and Caves of Aglarond to help remove burdens. Hobbiton Market is also nice for those double moves.
Unyielding Goblin Man of Bree Gate Picket Denizen of Moria Archer Troop Tower Lieutenant of Orthanc Champion Orc Cutthroat Orc Banner of Isengard Swo...