Im at 800 haste, and BH-ed GH is actually part of my heal 'rotation' when damage gets spiky. Nothing beats 17k crit GH and 6k aegis following it. Trading spirit for haste isnt a bad idea provided your DPSs dont complain, since spirit is useless for a disc priest anyway.Yea, nothing like gimping 300-400 of my SP just to get greater viable.
Sounds perfect.