Forum:Zolga and Soul Exchange

I know that if my opponent uses Soul Exchange on Zolga then I get LP. That is not this question. I am wondering if I use Soul Exchange and have Zolga on my side what happens. To better clarify; Zolga states:

"The controller of this card increases his/her Life Points by 2000 points when this monster is offered as a Tribute for a succesful Tribute Summon or Set."

Then Soul Exchange says:

"Select 1 monster on your opponent's side of the field. When you offer your monster as a Tribute, offer the selected monster in place of 1 of your monsters. During this turn, you cannot conduct your Battle Phase."

So even though Zolga is NOT sacrificed for the Tribute or USED for it. Does Zolga's effect still activate since it was still OFFERED in the tribute. Meaning if I use Soul Exchange with Zolga I can sacrifice an opponents monster get 2000 LP and get a 5-6 level monster on the field? Or if I sacrifice Zolga after sacrificing the opponents monster does that mean I get 4000 LP sacrifice an opponent's monster and get a level 7 or above monster on the field?