I have a couple of problems with the rules.
1.
The domain special power all say you have to be certain lvl to use it:
"Healer's Blessing (Su): At 6th level, all of your cure spells are treated as if they were empowered, increasing the amount of damage healed by half (+50%). This does not apply to damage dealt to undead with a cure spell. This does not stack with the Empower Spell metamagic feat."
Does this mean you have to 6 lvls of cleric or 6 lvls in general
Lvl 6 Cleric = lvl 6
LVL 3 Wizard + lvl 3 Cleric = lvl 6
2.
When using the wizards Arcane Bond ability what lvl is the minimum required to craft a +1 weapon. And again do you have to that number of wizard lvls of you can combine.
Lvl 6 Wizard = lvl 6
LVL 3 Wizard + lvl 3 Cleric = lvl 6