Ghost XP Build

[Kalgalath]

What build is the best for gaining the most xp you can?

For instance what kill streak line up would you choose .... like in MW3 ... Ballistic vests, SAM site then Remote Helli would give you almost double the xp you were gaining before.

And what game type like in BO where Domination was key in handing out tons more xp.

Also what is a good weapon perk attachment build to use for more beginner type players to get more kills?