In terms of a DC cleric specced for EH -- EE holds no appeal to me, as it's an almost entirely different game -- I''m naturally drawn to EA with its combination of wisdom and caster levels.
My initial though is to just go with....
10% mana / echoes to 30
10% light resistance
...and call it good enough. I'm curious about all those cool-sounding abilities EA seems to have, though. What should I be going for? What's too good to pass up?