With your tales, I'd strongly recommend
Mines of Khazad-Dum.
If this is sheer beatdown, why no
Lord of Moria?
And also why no
Gimli's Battle Axe?
I also don't understand the FOUR copies of
Delving. It's a nice card and all, but
Book of Mazarbul should do much more for you...and you've got only a 40-card
paired with it, so it's not like you need all that
Delving anyway.
One more thought:
Storm of Argument. Could be an awesome way to get
Flurry of Blows back.
EDIT: One other thought: I see very little Balrog protection. I know your Site 7 discards allies, but it couldn't hurt to toss in
Dwarven Smith as a sacrificial lamb. Heck, I'd rather have him than the movement penalty (and fellowship size) increasing
Dwarf Guard, though the Guard makes an okay speed bump as well, I guess.