Stacking Lore items

[Xyphos3]

I've been playing DDO off and on since Mod7, but often I find myself contemplating the stacking rules.

I have an old 28pt cleric from back when I first started playing, he's pure 20 WarPriest path with minor feat alterations (power attack and kopesh proficiency)

I'm planning on TR'n him to a 34 point 1FTR/2MNK/17CLR dual-wield, whirling steel strike.
I've got the build all planned out in the DDO planner app but I'm having some second thoughts as to what to wear for equipment.

straight to the point, does Greater Arcane lore stack with Greater Healing lore and enchantments (27% crit)
and if not, does Arcane Lore work with Harm and Mass Inflict?

The plan is to max out the healing/healAmp as much as possible without hindering combat so RS2 can hit/crit as high as possible to save mana for the damage spells that would quickly cripple an opponent so I could melee it to death without having to spend too much time swinging my longswords- eg, a balance of caster and melee - I like the battlecleric playstyle because when it comes time to kick a** and chew bubble gum but I'm all out of gum, I can let myself loose in a last-ditch effort

so far, I've settled on using Upgraded Gauntlets of Eternity for the healing lore, but can't decide weather to go Archmagi set or the Warpriest set