The big thing you aren't doing but would benefit from: Using Foci. They are good. Specifically, Sustaining foci (for Increase Reflexes in particular) and Power Focus.
Strength is not useful for this type of character (in fact it's only useful for very specific niches). If you have 2 it should be for RP/not drawing GM aggro, not for usefulness.
Pistols 3 is not worth it. You have plenty sources of boom.
Focused Concentration is too expensive for what it does. A mentor spirit is much better. I would also get Restricted Gear for a force 4 power focus like all the other cool kids.
You have too many spells with too much redundancy. Cut down to:
Stunbolt, Stunball (use these on living targets you can see)
Flamethrower,Fireball (really, I would recommend a different element, like Light or Ice, because fire resistance is fairly common, but nobody resists oddball elements like Blast) (use these on nonliving or stun-immune targets, and Fireball to hit people you can't see.
You can also use Powerbolt instead of Flamethrower.
Increase Reflexes is a good spell.
Armor is not, because it makes you glow. It's also not worth sustaining without a focus.
I'm going to recommend my sig again for other good utility spells, since I have the descriptions listed there.