Package homes have a lot going for them when it comes to remote area builds, when even one forgotten stick of flashing means a multi hour trip.
A few years ago I watched Pacific Homes pull into Buccaneer Bay with an 80 ft barge full of wall panels and other materials and then used a helicopter to fly it all to the build site. Was only 150 m away and 20 m up, but the landing point and access trail are both pretty gnarly. Using the helicopter actually saved them money. Crew of three on the barge slinging loads and three more at the site landing and unslinging. Insulated exterior wall panels went on the newly completed foundation/subfloor, everything else to the back yard laydown area.
That package contained doors, windows, roof trusses, standing seam roof panels, pre-finished soffit, fascia and siding material, and all other exterior finish items. Perfect solution for an off grid, water access only build. This old builder coukd see the attention to detail and was most impressed.