I will never forget reading an article about the team who built the first first Dodge Viper to compete in La Mans in the early '90s. The engineer said that if every part on the car is not performing at least three functions, it is not doing its job (and is adding too much weight). For example, the rear bulkhead firewall is also the front wall of the fuel cell and the back upright of the seats. This has driven all of my design philosophies ever since.
I like what you did. It effectively ties in the engine in three planes. Also integrating the engine block as a structural component.
On a jet boat, the hole cut for the intake substantially weakens the hull. You can see and feel it moving before the intake is set. This is worse with a full setback. The few V-drives i have worked on had massively thick hulls compared to jets.
Always enjoy your work.
Cheers,