I asked a question, and it wasn't whether sedevacantists are going to hell, as you claim.
I don't have to answer a question that is a wrong question to ask in the first place.
Archbishop Lefebvre took the steps that he felt were needed in order to maintain the Catholic priesthood and Tradition. He consecrated four bishops, without a mandate from Rome. This is as far as he went in order to maintain tradition. You'll notice that he did not continually accuse the modernist hierarchy of heresy, nor did he become a sedevacantist.
There's a theological way of viewing things, which says that we do not take the most extreme measures when confronted with a serious problem. Canon Hesse explained this very well in a video that I think Incredulous posted a few months ago, but I can't remember the name of the thread.
It just isn't Catholic to take the most extreme measures possible in dealing with a severe crisis.