I personally went with option 3 and never regretted it. Even though you can buff agi you still want it to be at least 75 so if you die you aren't penalized when you spawn. Plus its one less buff to keep on you at all times. 
 
You can't really go wrong with either sta or wis but I just chose wis since I played at the early part of the server and free gear wasn't falling off trees like it is now. If I'm not mistaken the highest sta you can possibly get is 255 and with buffs and gear it's not all that hard to hit that number, or at least break 200 if you start at 127. 
 
Either way works. If you're casual then I'd go straight for wis since the extra mana will help you at low levels. If you're a raider then perhaps the wis will be better. 
		
		
		
		
		
		
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