You get mana from Intellect. I just need to change some of the gems to something thats more like Intellect and Spirit, instead of intellect and stamina. Spirit gives higher mana regen (50% of which continues while i cast) and 25% of my spirit counts as spell power. So more spirit=more spell power=better healing.
But yes, I do have too much stamina.
Like I said, I need better gems in slots and gear that gives Int/Sta/Spr would be best.