Nyaricus said:
Paladin/Sorcerer. Charisma out the ying-yang, Good Fort/Will, good BAB, d10 HD, I think the only area lacking is skills.
Only problem here is that they can't cast spells in armor.
The true problem with Gestalt is that, while you have the best parts of two classes, you still only have one action per character. So if you're fighting a mob of monsters, or your standard Box of Hit Points, it's going to be a hard fight.
What I would do would be to subtract 1 or 2 enemies from an encounter with multiple opponents. Gestalt, Max HP, 35 point buy and Action Points should cover your bases. However, you might find that they do TOO well, or just can't be scratched, so be careful.
I think a Dragon Shaman/Artificer or Cleric/DS gestalt cohort would go a long way.
As a side note. What I suggest you should do is make a copy of the PCs sheets, and run some mock battles by yourself against the opponents in the module. See if the PCs get their clocks cleaned. For the first session, see how well they do.
You might also want to give them a "Save your bacon" item. A cloak of the Montebank, a "Rope Trick" item, etc. If they realize they are overwhelmed, then they should retreat and hide.