Nice and roomy engine room... although no "standing room," eh?
The big black thing... looks like a huge bilge pump? And the engine, a sail drive.... looks like a big black seal around the base.
Nice clean wiring and cabling... always a good sign.
Do show more. So many boats are just variations on "the same old traditional design." You have obviously gone off in a different direction.
Indeed I well understood the "2-stage full extension drawer slide" when I saw it on the video. Very nicely done, really. I also admired the well placed accommodation ladder for the garage... showed good attention to detail and a full understanding of the reality of launch and recovery as well as boarding and using the swim platform.
As far as cost, etc... well the truth is that so many boats are only partially finished... and depend on their owner(s) to come along and put in stuff like swim ladders, motor lifts, methods to handle the dink, ways to get in and out of the boat, navigation and control systems, etc... that really we are often deceived by the phase "finished boat."