Shaman Questions

[Drakul]

Here's a jumble of questions about Shamans for anyone that wants to chime in on some of this:

Allakhazam says Drowsy only lasts for 3 ticks at level 5 and duration increases with level, but the spell description in game says something like 3:00 without mentioning any level restrictions. Which is correct for these sorts of spells?

Do slow spells stack, for example should I cast both drowsy and walking sleep at level 14?

Does anyone bother casting the fleeting fury type 18 second line of spells while they are solo meleeing?

Is it possible to make a macro that targets youself, casts a heal, then retargets a mob you are fighting on it's own?

Will I continue to tank and melee while soloing or will I eventually have to stop doing this and act like a caster because the mobs start hitting too hard?

If I have a weapon without procs are dexterity buffs useful to me at all?

Whats the limit on the to hit cap? I miss a lot, so will increasing agility cut down significantly on misses?

How important is wisdom vs stamina, hit points, strength, dex, agil to a shaman? What balance or ratio should I be shooting for?

Does the class take off and have super uber level ranges? I like to solo, and I had a pretty easy time up to level 8, but now its gotten tougher. It also seems the level 9 spells kind of stink other than SoW, and I still won't have any DoTs to kite with. What level does the Shaman really take flight?

Does SoW stack with spirit of bear or can only one be active at a time?

Thanks in advance.