For dwarves, I'd suggest one of these:
Dwarves only -
Gimli, BOG, all the companions from Reflections, cheap axes, rings, all their stuff.
Dwarves with Sméagol - this deck is pretty cool, Sméagol helps a lot and sets up the site path for you.
Token Dwarves - pretty fun, thought requires
Gloin, SoG from Hunters, and a few other Hunters cards, so could end up a little expensive.
I can build you deck lists for all of those. Just let me know which one.
As for Isengard Shadows, I'd recommend either plain beat down with the biggest guys or trackers. Again, could give you decklists if you wanted.
If you have a list of what you have, I can come up with some deck lists as well, based on what you have.