Are there any good idle stance mod for when you have a 2 handed weapon in your hands. I'm looking for something more tactical for my next play through.

For a tatical position of the rifle, i recommend this, looks really badass, but you have to install enhanced camera by LogicDragon
Weapon Animation Replacers by joefoxx082
It is not too many things to install and totally worth it, specialy with WAR that you can choose some diferent idles with 1 handed guns, assault and precision rifles

Thanks ill take a look.

You could try all those cool anims Hitman uploaded on the nexus they are all worth trying it,oh and some of them (the first person only ones)are incompatible with the mod Dtobviousmcduh suggested above.
http://www.nexusmods.com/newvegas/mods/57561/?