I call this 'lack of self awareness' that sometimes manifests itself by misguided boat projects, a sort of 'tunnel vision'. Sometimes you get so close to something that you lose perspective and really need to back up a few paces and take stock of the situation. But, boats being boats, we still get sucked in on boat projects and we long ago named this the 'Brer Rabbit Effect'. Like in the story about the 'Tar Baby' which to me represents how you get stuck and then drawn in by a boat project.
I have been afflicted in the past. When a simple car repair becomes a frame up restoration, it is known as "Whileiamatititis" ("Well, while I am at it, since i am replacing the clutch I might as well rebuild the transmission," followed by "well while I am at it, and the transmission is out, I might as well replace the U joints and balance the driveshaft..") When I boat build or boat project gets kinda sideways due to unforeseen complications or design anomalies, it is "Well, I am in this Deep- Might As Well Keep Going Syndrome." In the military it is known as "mission creep."- what starts off as a recon becomes d-day.
I've looked at these sites. I've also looked at a few You-Tube videos of H-Boat races. It looks like a fun boat. I've sent a PM to Alan H; he used to own one and sailed it in the SF Bay area.
small cockpit, smaller than your current boat.
Nice boat, but if this is what you have deduced is the boat that best fits your needs, i gotta think your list of requirements was straight chain-jerking, since it fits few of the requirements laid out in the design brief. No head, small cockpit, bisected by a traveller, etc.