I instinctively said
I would have had to have been over 180 lbs for that to have happened.
I thought that seemed overly wordy. Too many "have"s and "had"s. So I tried:
I would have had to be over 180 lbs for that to happen.
That didn't feel right, though.
My brother and I were talking of a past event. He suggested something that could have happened. (Something like, You could have hung from the chandelier to get it out). I tried the first of the above statements. I want to speak about something that would need to occur for something else to occur in that past situation.
What would be the proper way of saying what I was trying to say up there‽