well, i have 14 char and 20 wis and 2 force point regen. i cast spells like a madman and do insane damage with dual sabers due to criticals. 
force regeneration is broken in the game, and so far no patches to fix it. some people have tested it, and apparently its broken.
i am beginning to formulate a logical theory. as to whether or not a really logical theory corresponds to reality is another matter..
wis affects saves, most effectively on will saves, with lesser affect on fort and reflex saves.
charisma will affect how cheap light and dark side powers are.
both affect force points.
this implies that an 18 wis and 14 char is the most effective spell caster, given reasonable attributes distribution...
14 str
16 dex +2
8 con
8 int
15 wis +3
14 cha
may be for me the best stats possible for my ultimate cheesy uber character...
high defense, since many many str items exist in the game...besides, he's a guardian...will eventually get the +3 bonus from light side...
all important stats are in multiples of 4 to maximize benefits...see stam's wonderful guide for the exact reasons...
http://db.gamefaqs.c...or_gameplay.txtdouble bladed light sabre and a blaster rifle...
yep, blaster rifle...
after force jumping to the middle of a swirling melee, if a enemy is foolish enough to turn their back on me, but just a bit too far away to reach in the next round, switch over to blaster rifle, easy with a double bladed light sabre, and inflict insane sneak attack damage, taking advantage of the evil +10 to attack a point blank ranged attack gives you...switch right back next round, cause you're in the middle of the enemy formation...
They call me....
Darth...
Darth Gizka...