I am preparing to run a campaign through Castle Whiterock and was looking for some advice about party construction. Are there any must have members in the group? I am converting the adventure over to Pathfinder, but the general classes are all the same. I will likely have 4-5 PCs in the group, so it shouldn't be a problem to cover all the usual party members, but this group has gone without a cleric before. Is that a big problem in this module? Any advice from players or DMs who have run this adventure would be appreciated!