I bought this shed near the end of Sep 2019 and attempted to complete the assembly before the first snowstorm of the season (95% done before the storm). We ran out of sunlight and missing skylights and had to tarp it while 
waiting for parts. We took about three hours to pre-assemble and sort out parts and hardware and about 5 hrs of assembly. We anticipate about 1 to 2 more hours to finish the roof. We had two semi skilled assemblers and one person to weather in the skylights and windows plus act as 'gopher'. Spent some unproductive time in assembly then realizing the washers were in the wrong place and taking it apart. Next time we'll ace it.