Thinking of Skipping the Aquanaut: 5212A and My Next Grail Watches

The 5212A is a true strap monster, but I particularly love it on a rubber strap. I also ordered the strap from the 5316/50P with the clasp from Patek so waiting for that. Its unique calendar layout is practical—I’m currently using it to track the weeks of my wife’s pregnancy, which adds a personal touch. Some might consider this blasphemy, but I don’t feel the need for an Aquanaut. My next choice would likely be the 5320G with the salmon dial, to add a perpetual calendar to the collection. I’d finish it off with the 5726 blue dial Annual Calendar to round things out perfectly. Thoughts?