Having quickly run your build through EFT, it looks like you probably need very few skills to make it able to take 195dps.
I put on Large 'Accomodation' Armor Reppers which you should be able to pick up on the market. If you need any let me know, I have a few spare I think.
Replacing the plates with a full suite of N-Type Hardeners will bring you up to 320dps. If you can find the room for a Damage Control II as well that will bring it up to.. 376 sustained DPS soakage. That's alot for a level III mission :)
If you need anything let me know...
Here is my level 4 mission running Domi. I love the ship, even if a raven is the optimal mission runner, I don't feel like training up Caldari for the one ship.
HI: 4x Ion Blaster II's 2x Drone Range
MID: 5X Cap Recharger II's
LOW: 2X Large Armour Rep II's 3X Hardener II's 1x True Sansha Energized Adaptive Nano Membrane, 1X Damage Control II
RIGS: 3x Cap control Circuits
You need the rigs and ALL the mids to make this cap stable. I have 29m skill points and haven't found a way to remove a single one of those cap regen modules, save from going for officer mods, even then you may only free up a single mid slot!
Most damage is of course from the drones. You can take full aggro from a lot of level 4 missions and just let the drones work their way around. A bit slow but it does the job very cheaply. You don't need faction mods at all but tech II is very important for the tank related modules. Hi slots are filled pretty much just for whatever fits. Neutrons would be nice but arent going to fit without Advance Weapon Upgrades 5 and a 5% implant.