Factotum Gestalt

[Odinson]

Having our last campaign completely walled, my group decided to get a new one going, with the partial gestalt system. I've all but fallen in love with Factotums, and I was looking at  Factotum/Adept for my character this time around. I know with Adept I'd get a base Will save of 6, be able to cast spells and get the familiar. Are there any other good combos I'm missing? I think Warrior would get me a BAB of 9, but I'm really not too familiar with the myriad of class combos out there.

A little more on the campaign...
32 point buy
9th level characters, 36k gp
Max HP at first level, then 3/4 HD after that.

[Lycanthromancer]

There's really not a lot of variety in the NPC classes, though if you're allowed to play with psionics (and your DM is willing to give a REALLY good 3rd party source a try), Dreamscarred Press made a psionic NPC class called the augur, for a bit more variety for you.

It's in Untapped Potential.

[Odinson]

Our DM's not allowing any third party material, unfortunately.

[geniussavant]

If eberron material is allowed you could try magewright, it's the Npc version of artificer.

[Ivory Knight]

If you can sneak it by your DM(SC class, albeit rated a tier lower than the Adept), a Swashbuckler would get Full BaB and some Int-Synergy.
Barring that, Adept(or Magewright) are probably the most useful NPC-Classes for you.

[Freshums]

The Eberron Adept also gains a Cleric Domain.

[Havok4]

The Eberron Adept also gains a Cleric Domain.

Adept could be slightly good for the minor spellcasting, although magewright would likely be better due to the int focus.

[Pan-Fried Hamster]

*snip* Whoops. Didn't catch the partial gestalt bit.