if you need more heals ask kz to put his up, it heals for like 3.5k per turn. also nuch has a zombie leader (as long as ur 50% hp a hit that would kill u only takes u to 1 hp)
There are a few mobs u can farm form normal instances:
-Mermaid it evos to a Siren which even the best teams will use. There are 2 other farmable healers dryad and cupid. Both are good but mermaid is by far the best.
-Naga. This has a delay skill which is really useful. Also used still with high level teams. The special naga instance is tomorrow but not sure if you're rdy for it. it can drop in normal instances but they r pretty low.
-Titan. This is an orb charger for a fire team. Really good but not as important as the other 2
You can find the instances they drop in at
http://www.puzzledragonx.com/en/normal-dungeons.asp
also the best exp/stm ratio till atleast lvl 50 is Dragons of the Tower inside Tower of Giants. On the weekends it gets 1/2 stm and is even better