So I've finally started doing some raiding on my shaman. Mainly just kara right now, but there are some fights that are extremely extremely testing my mana pool.
So far from what I've seen:
Attumen : No issue
Moroes : A little bit, but mainly since I was the kiter and spamming Frost Shock, I also didn't pot as smartly and promptly as I could have.
Big Bad Wolf : No issue
Curator : No issue
Aran : Babysitting Earth shock a lot, no issue
Prince : Sort of an issue, depends on how much dps everyone else is doing.
Nightbane : Similar to prince, only time we did him was with a high dps group so it might be an issue.
Illhoof : Ugh, major major issue. Between the constant magma totems and just how long the fight takes it leaves me toast. Last night ran completely out of mana on that fight.
I don't think having a shadow priest is an option really. JoW is occasionally up, mainly on long boss fights.
I was saving up badges to get my Icon, but I said screw it after the raid last night and bought the totem for 15. I roughly calculated that is worth around 55 mp5 if just doing LB spam. That sound about right?
Also have a question on speccing. Due to how the elemental tree is constructed, everything is divided above and below that 20 point line. I'd love to not put so many points in improved shocks, but not much else to stick it below 20. Can anyone chime in with their opinion on what to give up to get 2 points more in crit chance? LO and Totem of Wrath are no nos. So is range on nukes. So is time off your main nukes. So it leaves threat/hit or mana regen.
Which leads me to think that even with being mana starved on some fights giving up 2 points there is the right choice.

I tried to figure out the math for whether 2% crit gave me more mana regen than 4% of my int as mp5 (which I think is a bit over 400 raid buffed, thus 4% of that being 16 mp5) If my nuke costs 297, (lets say 300) and a crit makes it 120. That means a crit saves me 180 mana. If i crit 100% of the time that would be each crit gives me 1.8 mana. So 2% crit gives me 3.6 mana for a 2 second spell? Which makes it 9mp5? Please tell me if I fubared the math here. Although I think one thing is that going to using that totem will drop the mp5 I get from more crit. While it wouldn't drop the mp5 I get from unrelenting storms.
For consumable usage, basically supers along with adepts. Also wizard oil. I suppose I should go out and get some major magebloods for the long fights, or would it be better to get a flask of mp5 or a flask of supreme power? Oh plus I'm a LW who regularly uses drums of restoration, which does help a bit.
So any advice on:
1) Spec choices (unrelenting vs tidal mastery vs ?)
2) Gear options
3) Consumable usage
Would be appreciated. Thanks.