I would recommend a splash of wizard and fighter for a leveling cleric. I took the fighter level early (level 2) and then took the wizard level after I got blade barrier and radiant servant 2 (level 13 if I remember right). At level 15 (13 cleric/1 fighter/1 wiz) she was doing as much damage with her blade barrier as my level 15 pure. And surpassed the level 15 once I hit level 15 cleric (max damage level for blade barrier).
Talk about making Necro IV a breeze, me and a FvS solo'd all the quests on elite
The amount of Charisma depends on what i want that cleric life to be like. If I am going caster focus I increase the charisma after I max out Wisdom, Con to 16. I found that if I have a modest investment in Charisma that I can obliterate undead prior to RS with a turn attempt and the spell seek eternal rest with a item to boost myself too, hallowed or sacred work here. A charisma of 14 to 16 is needed for that though so not sure if you want to spend that much to boost it.
Another decent cleric build is 2 monk and take zen archery for a bonus feat, along with being an elf and taking the range damage and attack enhancements. You can even be AA if you want to give up some casting feats for the feats you need. Helf works great there as you can take ranger dilly for a bit of bow strength to add to damage.
But, if all you want is a typical cleric life where you cast spells, melee when needed and keep a party up. 18/1/1 cleric, fighter, wiz will give you a lot of extra goodies for very little loss.