Sorry, what are the EE's you're mentioning? EE to me means Epic Elite
Warforged? Not sure how you're getting those stats otherwise. Artificer 6's healing will be falling off mid-teens probably; you won't have burst healing, although you can probably top up between fights.
12/6 Fighter/Artificer, what are you after? Artificer implies runearm, so maybe something with SWF? Or is it a crossbow build for Fighter PL? Or THF because of the update?
If you're going Artificer, do you have access to
Harper Agent? Might be worth going fully Int-based if you do. Harper Agent gives Int-to-Hit & Int-to-Damage as well as Know the Angles, which is a pretty solid buff to DPS & tactics DC's (like Stunning blow). If you're going that way, might consider THF for the multi-stuns available. Or Renegade Mastermaker for the punches
Since Fighter also gets Tactics bonuses, you could probably have very solid CC effects
I'd love to help ya more, can you tell me a bit of what you're aiming for? Thanks