Morning Lord is exactly the same as Doomguide. The name/deity was changed because our timeline would not support worship of Kelemvor (he's off somewhere languishing as some abomination were-cat type creature due to a family curse, not yet a god).
I tested a Cleric/Morning Lord/Hierophant Charisma based turn undead PC w/ wisdom as secondary stat and it was quite strong... Turn undead, outsider (requires epic feat). Note that you could go a different direction and worship selune to be able to turn undead, outsider and shapeshifters...
There is no reason you can't have Monk as a 4th class in either case, 5 levels of Monk + PSC + 3 Spell Power Hierophant feats will give you 32 CL so long as your other class (besides cleric) is a full progression class.
EDM is obviously powerful, but caster clerics can also be quite potent... If you decide you want to melee you can still do so thanks to (extended) divine power.