Thanks for sharing your electronics plan/setup!
One question though, did the Furuno radar interface with your B&G Zeus? You mentioned you replaced it when it died and it sounded like that was after you installed the Zeus. That would lower the entry price if I could just replace the chartplotter at the helm with one that had wifi, and could be picked up on a laptop below.
Oh, one more question, what size monitor did you put at the helm and are you happy with the size?