I think I mostly agree with your first statement. I have a different take on the legal proceedings (there's still the vote count, at which point congress can make challenges, etc.)
But certainly there are limits to how far the challenge can go. I'll be right there LOLing with you if he needs to be bodily removed from the WH. I disagree that he's given any indication that he'd go that far, though. Once his options are exhausted, he'll leave.