Ok, so after reading a bunch of different posts and tutorials on this matter(eg. Supporting multiple screen sizes) I've made a decision.
I'm gonna use Scale outer mode + landscape orentation for my game, since the way I design it it won't be a problem is the player sees more. However that still leaves a few questions so I can make this work properly, please help if you can.
1. What is the biggest size iOS device(iphone/ipad) on the market at the moment?
2. What is the most common size for iphones/ipads(and if possible which iOS version/s correspund with this size)?
3. How do I center my layouts so that they scale out from the center instead of pos 0, 0?
4. Where do I set the orentation? By landscape orentation I mean the player has to hold his device horizontaly and the game runs from right to left, or am I understanding this function wrong?