I don't have nor unlikely will ever have this lens (cost) but I am planning to get an 80-200 f2.8 AF-D two ring and that is a heavy lens. I had it before. I don't get why you want to get rid of a quality pro lens. Like anything in life, you make adjustments. I plan to find a way to comfortably carry and use my heavy lens. I have a bad back, so I understand having to tote a heavy lens. But to me it is worth putting thought and effort into developing a sensible carry solution.
Just my 2 cents worth. I feel you will regret getting rid of it as I have regretted getting rid of my two ring. Spare yourself the pain!