epic inferno bracers (and equip guardian's ring and circle of malevolence for prr/mrr)
If you want more prr you can equip a light armor (shadow armor, blue dragon, whatever) and take "light armor proficiency" enhancement in the eldritch knight tree (it's +9 prr for only 2 AP).
I still don't understand what your build is focused in... it doesn't have max spell power: what sorcerer don't focus on spell power?. it doesn't have max prr: so why are you equipping dumathoin's bracers?. It's focused on DC, ok.
you are wasting the gloves slot for only +35 hp: instead of blindness immunity in the green steel item, get +10 hp (blindness immunity can be slotted in a yellow slot; necro 4 items have tons of slots). this way you can keep your belt with +11 dodge (sorry, I'm not a man because I crowd control enemies avoiding physical contact) and move your +6 exceptional int skills item on gloves.
However, I will not speak about equipment anymore: there are hundreds of equipment combinations.
I'm simply saying that your equipment doesn't maximize spellpower, but if you prefer hit points over spell power then your equipment is the best.
you could remove the points you spent in the eldritch knight tree otherwise I could think that you prefer +15 hit points over +10 universal spell power.
Ok, you spend points in eldritch knight tree in order to have wand and scroll mastery: it's reasonable (one more reason for which I would not run a fleshy sorcerer).
if you are a man, then don't take cocoon and twist fey form instead (one more reason to not run a fleshy sorcerer).
My druid has about 500 spell power ice at level "20"... that's why I'm trying to suggesting you better solutions.
Unless you are saying that druids have higher spell power than sorcerers.
ahahaahahahah!
that's funny. "all your fire spell power"? 433?
I can't imagine what's your fire spell power if you really decide to sacrifice your secondary element
yes, just focus on 1 element and cast your secondary element like a wizard with the spells cooldown of a sorcerer. Harper tree not only gives more universal spell power to your primary and secondary elements, but also gives you +2 charisma and +1 DC to "all" spells thanks to "moment of clarity" (that is also a clicky that gives +10 DC with 5 minutes cooldown... a lot better than magister arcane spellsurge for those who like to use such abilities), more spell points, more hit points (those hit points that you are wasting by taking "toughness" eldritch knight enhancement tree).
Do not underestimate harper tree.