I'm sure that people much smarter than you or I have figured out exactly how much volume they need up there to keep her from going tits up.
yeah... i originally had some text in there about how I haven't a clue, but figured it went without saying.
They're apparently relying on lifting boards that are located in the hulls forward of the main beam to help keep the bows out of the water. Agree, the bows are quite thin considering the boat is nearly as wide as it is long. My personal opinion is that it will probably work OK but it makes the margin of error even more unforgiving if pressed hard. These things will be capable of traveling at speeds that will cavitate foils. Additionally, having the boards that far forward in the hulls will not help the boat's tacking ability.
