Congrats on a very neat installation and the choice of engine (I also have a Sole). It's great that you have lots of space between the gearbox coupling and the shaft seal. Mine, being the 25hp Sole, doesn't offer me that. If I'm allowed two comments, they would be: A) to locate the water filter above the waterline. Not only is it easier to inspect and clean but much safer. B) Delphi fuel filters are good but quite fiddly to change as they have too many o-rings (I have one too). At the first opportunity, I'll replace it with a spin-on type, like a Racor.
Once again, well done.