From the measurements that I took some time ago, and if I remember correctly, from the bottom of the tower tube to the bottom of the speakers here is what I have in the Wetsounds hang height:
Rev8 Fixed....10 5/16".
Rev8 Swivel....11 15/16".
Rev10 Fixed....12 5/16".
Rev10 Swivel....13 15/16".
And, as mentioned by Mike (MLA), the speaker pods begin to narrow at around mid pod.
While I don't have a complete perspective of your bimini from the photos you have to consider fully opened, fully closed, and the path or arc when opening/closing. Nothing unique about your situation.
As mentioned earlier, whether the speakers occupy the front or rear tube, transferring the harness in a concealed manner is not a big problem.