4Greens - I do not know how much 'flying' goes with your 'ATPL', but I need to say 2 things to you:-
1) You owe Luap a forum apology. His post was accurate, relevant and correct
2) If you take no other advice from me, please do NOT try to DITCH an almost uncontrollable a/c full of trusting pax and crew UNLESS there is no choice. Find a nice big airfield where, when you crash as you almost certainly will, rescue services can reach your a/c quickly.
As Luap said, you are most likely to end up digging a wing in or pitching up or down on attempting to touch down, and 180kt plus water is far from soft.