What do you mean when you say material opposition?
Do you go for the Material Opposition bonus (Unconsciousness Range)? If so, this becomes a bit confusing because looking at the wiki the effects don't stack outside of one per tier (so you could get the effects of 1/2/3 once). I believe they said it stacked like profane/insight/quality.
And if this is the case and you stack all 3 effects on 1 item, what do you put on the other items?
Sorry for the long question, don't really understand LGS crafting that well...