It seems an awful waste of perfectly good grandmother time for Jennifer Murray to be doing this trip. I'm sure I'm being very dull but as I see it there are three issues here:-
1..if its technically possible to do it from the range/payload point of view then its just an expensive technical exercise. (Money better spent providing clean water wells for Somalis for example?)
2. If its not possible, well..
3..If its marginal, then its irresponsible because it causes other people to risk their necks trying to pull the ditched/ crashed/ forced-landed aircrew out of the goo.
...Oh, and TC, shurely 360/30 for half the flight and 180/30 for the rest?