What really makes the difference worth it is that we can keep the boat at our shallow water dock, yet we can sail to weather better than most. In our area in southeastern New England, weatherliness matters when you are heading west against the typically southwesterly breeze.
Apparently you put a high priority on only performance and shallow water capability. Not sure many including your wife likes the extremely restrictive cabin space of your boat.
We would find it unacceptable. Faced with the same choice, I might look at a cat or A seaward yacht. Or better yet.. Dock it elsewhere and get a boat your wife likes.
On the other hand, I am having trouble following your comparison to an IP. You compare it based on only performance. Let's put your boat and that big IP in tropical storm weather And see which one you prefer to be on.
Better yet.. Let's ask your wife..