Yosharian,
I like your Eldiritch Scion build. Quite creative how you've used the Arcane Bloodline and New Arcana trait to get some great spells, usually not available to the maguses (Sense Vitals, Echolocation, Greater Heroism - nice picks).
One thing I don't understand is why you're pushing Charisma instead of Dex? Sure it adds to spell DCs, AC and saves and even accuracy with Arcane Strike. But Arcane Strike is only a few times per day, while you tend to fight a lot. Won't the damage be too low and aren't you afraid of missing? Also you have little in the way of damage boosters - apart from the AP enchantments and spells, that is. Even Arcane Strike at level 19?
Also nice synergy with the sai flurry for 3 max AB attacks, 4 with haste, 5 with the supposedly best sai with Greater Speed.
Although I wonder if Flurry of Blows working with Spell Combat is correct? Or might get patched?
Another thing I wonder is whether Crane Wing working with Spell Combat is a bug and will get patched...