What is the MOST optimal
gear and talents choices for maxing Attack power? I am talking about flat out attack power, as much as you can possibly get, never mind crit, haste etc.
For example, am I bette off going for Agi and Int gear and spec talents that convert a % of Int to attackpower?
Or am I better off going all out Agi or Str gear?
It depends on if you're ranged or melee.
Ranged does NOT benefit from strength, only melee does.
Talents that convert INT to attack power will usually not be as beneficial as your primary stat. Those talents are intended for the purpose of making int-gear more valuable for AP classes that use mana, since you'll need int on your gear anyway. It's not intended to replace your primary stat.
Hope that helps a little.