so I ended up buying a keg like the one in the OP (got it on sale). can anyone suggest the right way to steam sanitize that setup? should I just plan on sanitizing the lid/posts in starsan and just boil the fermentor and the liquid pickup tube?
You could do it that way. You could also leave the tri-clamp on slightly skewed so that it gets steam but still lets enough out to not build up pressure.