Possession & Combat, resolving damage & armor stacking... Options

[Stahlgewitter]

So here i sit wondering how possession and combat resolves.

my ally spirit possessing me has power 6
so as long as i am possessed i sport
Body 10 which lets me equip my running outfit Bal 14 / Imp 9 each +12 ITNW
So i have a whopping Bal 26 and Imp 21

And as long nobody gets higher then 12 with his dv including ap i dont take damage at all.
And even if he gets higher then 12, its still Stun damage as long as he is under 26/21.
right?

Also and especially does ITNW stack with Hardend Armor?
Assuming i want later some Milspec for the S.H.T.F. runs,
would it stack?

And does ITNW stack with another layer of ITNW?
Assuming i let a Power 4 Spirit possess my (for the fun) Underwear (yep i am not a boxershort men =)
would it stack with ITNW from the Power 6 Spirit already possessing me?


first bit is more a recap, cause i would like to make sure i got everything right (IMG:style_emoticons/default/wink.gif)
[ITNW = Imunity to normal weapons, SHTF = Shit hits the fan]
I know i could get a higher spirit and better armor but i think its good enough for starting also i have some players in group that are new and i dont want to completely dominate the game (IMG:style_emoticons/default/smile.gif)

If i forgot something plz add