I have the same vessel and share the same issue. Ladder too short. Swim steps too high. I plan to do some diving from this boat and have been looking at solutions.
This company makes the only 'usable' platform I have found.
To me, it is still to high off the water. I want the platform as close to the surface as I can get and not interfere with operations.
I have since decided to 'make my own'. I can have an aluminum frame built locally, powdercoated, and for decking I'm using synthetic boards. I cam across a couple of custom builds that look really nice and are better built than the glass option. I can use four struts to support it. I have found no issues with mounting the hardware to the transom.
Here is a sample of one built for another type boat:
This company is in my own town.
Hope this helps. I may get to this at the end of summer (no time now).
My only challenge now is to get the frame drawing to the fabricator, then it would only take a slow weekend (and a few 6-packs) to finish and install.