A difficult choice

The party dealt with simultaneous attacks on the city.  The druid attacked the place where the most people were, namely the PC's knighting ceremony.  Meanwhile, the Old Man attacked where his nephew was held, the Clerical Apartments.
The motivations of the enemies robbed the PCs of some of the choice.  The druid, who wants blood for his ceremony, attacked where the PC's were, making him the more immediate threat.  He also brought a dragon (a young adult red) to the killing frenzy.  In all, 40 city folk lie dead.  Although they encountered the Old Man, the druid was more in their face.  This almost robbed them of choice.
 As I begin to prepare to put my notes into a printable format, I find myself facing a similar dilemma.  Boxed Set or Source Book?  Both formats have some merit.  The boxed set allows for separation of GM/Player info, poster sized maps, and the addition of things like player hand outs.  The Source Book is the standard today of RPGs everywhere.  It probably has room for more information overall.  The source book would be easier for converting to PDF.

The party followed after the druid and his dragon, again plumbing into the depths of Mord Mar.  Making a lot of noise, they attracted some were-bears.  While fighting the were-bears, the Menagana attacked as well.  A few party members were turned to stone, but all survived.  The stats for the Menagana:

Init +6, Senses: All around vision, Darkvision 60' Perception +22

AC 23, touch 14, flat-footed 18 (+5 Dex, +9 natural, –1 size)
HD 12 HP 75 DR 5/

Speed 40 ft., swim 20 ft.

Melee bite +10 (2d6+6 plus poison), (6 x) snake bite +5 (1d4 plus poison)

Space 10 ft.; Reach 5 ft.

Special Attacks charming song (DC 20 Will/ Cha based), petrification gaze (DC 16 Fort/ Cha based)

Spells Known (CL 7th)

3rd (5/day)— Fireball, Dispel Magic (DC 16)

2nd (7/day)—Invisibility, Scorching Ray (DC 15)

1st (7/day)— Cure Light Wounds, Magic Missile, Summon Monster I

0 (at will)— Daze (DC 13), Bleed, Read Magic, Detect Magic, Mage Hand