So I just finished the quest with Falkur and am now a part of the Companions. The leader opened up telling me he would rather go to Sovengarde which I totally understand. Where can I find that cure for him, and, is it too early to do that? Would I missing out on anything epic? I don't really care about becoming a Werewolf so that's not important. Thanks!

It should give you a marker to kill the witches in Glenmore Cavern towards Markarth. See this wiki link for more. There is a bug associated with the misc quest helm of winterhold. http://elderscrolls.wikia.com/wiki/Blood%27s_Honor

Thanks! When or how does Kodlak find out about the conflict between Dragonborn (me)/Aela and Silverhands to initiate the quest Blood's Honor?

After clearing out Gallows Rock and maybe getting a radiant quest or two. The whole chain was very slow to develop for me, but keep doing the radiants (and maybe get other stuff done as well) and it should work itself out.

Sweet. Thanks for the assist, Shield-Brother!