Solo ... how could you forget the possibility of dipping Divine Mind 1 at level 7 ...
If you pick Knowledge mantle, the MGA lets you treat
all knowledge skills as if trained.
You can Take 10 and give the Aid Another +2 to any of your party mates' knowledge checks..
The Aura lets your party mates get a +2 on their checks too.
Pick Call To Mind via the Hidden Talent from the Mind's Eye upgrades.
Basically it's a Re-roll of a Knowledge check, and with a bonus.
That bonus is listed as a +1 in CPsi instead of the +4 in the XPH.
This was the best and least well know nerf in CPsi.
This would also free up some of the skill ranks for other goodies (!!)
And get Martial Weapons + Heavy Armor, when you can actually afford them.
But it's at the expense of a +1 to BAB, and all the Expert's level 20 goodies.
You have to be Human to multiclass this way. It may not be worth it.