What is your conviction level with all of those charms? If you're honestly going to be using them, you shouldn't have a high base-level conviction, considering mages often use +skill gear.
And if you replaced those offensive GC's (and yes, I understand that you just had them sitting around) for combat GC's, you'd be so much more effective... bringing up your FoH AND BH damage by 10 levels each is pretty sick...
You should try to find a needy tesladin, frost zealot, ranger, or some other fun builds, and see if they'll trade... they typically aren't worth 1 for 1, but the damage you'll get from the combat GC's are just far superior than the offensive GC's... especially on the FoH, unless, as stated before, your conviction level has a really low base-level, and you actually utalize those offensive GC's to your skill allocation advantage.