Spirit values for raiding?

[Willis]

Almost finished collecting 346 gear and raiding may be in the near future. Currently I have ~2200 spirit, WS Glyph, talented into Improved Shields. Heroics are well.. heroics were easy when I had 333 gear it was just all about how smart the group was. Better gear allowed me to cover for more mistakes.

My question, is there too much of a good thing with spirit? Should I forge away some for haste/crit, or change my glyphs?

half enchanted,
4.94% Haste
2800 MP5 (combat) (using WS)
17.44% Crit
10.46 Mastery

[Sebadoh]

Judging by your numbers (and assuming you are good with Water Shield uptime and Mana Tide), you should be fine for raiding. I would go ahead and replace your weak WS glyph, but hold on to your Spirit - not only is it a good buffer (wait until you experience the raid content to see whether you have "too much" mana), but it also helps the other healers through Mana Tide.