Tough to receive though at a private home with out loading dock, would have been easier to split it up in smaller and less heavy crates.
And it is not easy for a DIY following your instructions to install the posts without a crew.
You should advise the DIY to install one post first, adjust height and plumb it, mix and pour the concrete and install it.. Let it cure and the then install the second post using a 1 by 4 piece of wood for leveling and spacing using the hinges as support.
It worked for me.
