32 point WF wiz

[D'rin]

So I want to make a WF wizard. I like to be able to solo some material when I have only a few minutes or just don't want to group. My battle cleric does a good job but i would really like a caster that can solo even better. I have a sorc but she is to squishy and can not self heal fast enough. So I thought WF and did not really want to take the hit to cha for a sorc. Not to mention I have not had the chance to try out all the spells so this will allow me to. here are the stats
str 10
dex 10
con 18
int 18
wis 8
cha 6

I figure this will allow me plenty of hit points and max out my int. For feats I was looking at.
1 mental toughness, extend(bonus feat)
3 empower
5 quicken
6 sf necro for fod and fear
9 maximize ( figure by this time I will have the sp to handle the cost)
10 spell pen
12 sf necro or improved mental toughness
15 greater spell pen



any input into the spell focus would be helpful. For that matter any input at all would be good.