Assembly took us about 10 hours with 2 adults (few breaks with small kiddos). 

Came in 4 boxes, nicely packaged. 

A few panels had pin like holes, unsure if this was during manufacturing because they were packed well.

Have a needle nose pliers hands to open up some of the bracket channels for the roof as they may not slide in position at all with a channel too tight. 

Another review said not to use power tools and we agree. We used a screwdriver, pliers, leveler, and ratchet screwdriver with an allen tip.

Take your time,  look at the whole instruction before doing it and we would encourage you to leave it all wrapped and labeled until you use the pieces so you can identify them.

Not sure if this will handle the MN winter weather and snow so crossing our fingers!