I like to aim for 30 as the lowpoint, and I'm happier with every point I get past that.
Still, I DID suggest adding 1 extra skill vs 1 reflex as a good alternative. :p
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I'd really want to recommend that this is changed to reflect that the CHA score determines the number of bonus spell points that a FVS gets, possibly also with an explanation how it's calculated. It's quite a small amount compared to the total number of spellpoints a FVS gets at lvl 20.
As the FVS can be a bit complicated to build, many players who knows how to build them, often just put 10 or 12 points in CHA so that they have enough to cast level 9 spells and possibly can still have enough with a cast Eagles if disjuncted.
Each 2 points of Charisma gives you 29 SP at level 20 and less than that at lower levels. (I believe it's 9+lvl).
8 starting Strength is dangerous.
I run 12 base Str on my Wizard, and unless I wear a Strength item, I'm frequently burdened (which cripples your movement rate) when hit by a Ray of Enfeeblement.
With an 8 Str, some of those Rays will actually incap you. While incapped, you cannot heal, or even drink a Lesser Restoration potion.
Reflex saves are indeed important - and for that reason alone someone might consider sinking extra points into Dex on a 32+ point build.