Thanks to Korgall, Narsica, Vanidi, and Baracko this is now complete and out of my quest log...and I have a new hat!
This group made this quest easy...VERY easy. This one is definitely all about class make up, and now that we know what works, we can get the rest through this with the same classes...we didn't wipe, we never went OOM on the purple ghosts, and the Darkreaver wasn't difficult at all. The only time we came close to wiping was on the green ghosts which are tricky to pull, but we worked through that fine too.
I am groggy as heck this morning, but still on that high from getting this done finally last night! Thank you guys! I owe ya!
Oh, aside from the Skyfury Helm, you end up getting 5g and 97 silver, plus 200 faction with the Horde (that works out to 800 faction - 200 for each!)! Definitely worth while to do just for the faction if nothing else.
The Darkreaver also dropped a very cool looking two hand axe that none of us had ever seen before...I forget what it was called now.