[Cerek the Barbaric]

Alright, I need some advice here. I'm playing a solo Bard (Skald kit) and I've just entered the Druid Grove.

I have Tactics and Ease-of-Use (plus other Mods) installed. I've already run into some trouble with the multitude of trolls I meet on my way into the grove and it sounds like Faldorn is simply unbeatable.

My Skald is 13th level and I have the Improved Druid Acorns that summons Bullwinkle and the Nymphos. That should help me get through most of the prelimanary fights and I planned to have Cernd challenge Faldorn. The main reason I've come to Trademeet so early is to get Gnasher and Blackblood so I can gain Pitchwife for my Bard (yes, I used pre-knowledge to give him a proficiency in clubs - but mainly so he could use the +3 club from Illyich to help defeat the rest of his crew).

Now that the set-explanation is out of the way, here are my questions.

1) Can Improved Faldorn be un-installed separately from Improved Druid Grove, or do I have to "turn off" the Druid Grove to get rid of Improved Faldorn.
2) Will the other quests in Trademeet (along with the merchants) be available if I just choose not to go into the sanctuary and challenge Faldorn? Or are the rest of the Trademeet quests screwed?
3) Do I need to let Cernd into the party to challenge her, or do I just designate him as the challenger when the time comes?

I've only played Trademeet once before, and it was pretty late in the game. I also didn't Tactics or Ease-of-Use. It was just straight Vanilla SoA. In that game, Jaheira managed to beat Faldorn fairly easily.

Thanks in advance for the advice.