Why must the build be done all at once in one go? Humans will land at the dawn, leave before dusk, working in 14 day shifts set up the base. This will repeat fo

Why must the build be done all at once in one go? Humans will land at the dawn, leave before dusk, working in 14 day shifts set up the base. This will repeat for several months till the base gets self-sufficient enough. Some stations in Antarctica were built that way only during summers, in winters they were left empty till finished and operational.