I have to agree with my Rams brother, jdhommert, on your Rams picks. I do not anticipate the Rams trading up at all, and, in fact, it is much more likely that they will look to trade down if they do anything.
Also, remember the next OL that Fish picks in the first round will be the first of his career. So there is that to consider....Having said that I certainly would love to select an offenseive tackle at that spot.
Finally, have to agree with you and hommert on Mingo; just don't see him as a good scheme fit and we are OK at defensive end at this point. I would love to see the Rams grab McDonald if not just to keep him away from the Niners.