Throw out everything you know about City of the Spider Queen as a campaign, because as Oslecamo's mentioned, he's re-tooling it for high-power 3.5. I'm more than willing to help you boost your character, but first I would like to know what concept you're operating on. It seems like you're mostly working with making a gish; is that accurate?
Just so you have an idea of what the current party make-up is, we've got Kaelik as Elemental Siphon (a Tome-level elements-based pseudo-caster he created, by my understanding, heavy on battlefield control with some decent damage and utility options), myself as a Force Potentate (force-effect based pseudo-caster created by Kaelik as well, also heavy on BFC though slightly more geared toward touchless combat maneuvers such as tripping, grappling, etc.; also has trapfinding and other utility abilities), Risada as a homebrew Marshal (melee combat and party buffing), and Thistledown as a homebrew Ogre Mage racial class (Gish bruiser).
Right now, we lack a full caster (with the ogre mage gish coming closest), and any buffing that stacks, enhances, or complements Risada's would be appreciated; Furthermore, we don't have anyone devoted to high damage output (by 4E parlance, a 'striker'), though that's really the least of our concerns I imagine. I'm sure others can find other holes in our capabilities.
I certainly wouldn't want to shoehorn you into filling the gaps as much as Kaelik might, though he's the one who organized the game in the first place so besides Oslecamo being DM and having final say, Kaelik's word is what goes. I'd like to help you make the character that best fits what you want to play while still contributing something to the group that we lack, and I believe that's entirely possible.