Altaria
Careful:252 HP / 200 Def / 56 SpD
@ Leftovers or Life Orb
Outrage/Roost/Dragon Dance/ Heal Bell
Could this work?
It seems to me like you're trying to combine two sets into one; either make altaria a bulky dragon dancer, or a supporting heal beller, but if you try to do both with one set, it won't do either as well. Obviously, I have never tested this set (and I don't know uu that well actually), but this is just my impression. Unless heal bell is there just for taking out confusion, in which case I'm not sure what to think...probably worth it to switch to another move to hit steelix.
And probably leftovers, it will make up for itself with the extra dragon dance you get/2hkos that turn into 3hkos that you can roost/dance on then.