What do I need to finish installation that's not included? Specifically, are the hooks that connect to the the support structure included? Also, when hanging from that structure, how long is it from the hook from the hook in the support structure to the hooks on the chair? Is it adjustable? I have a 10 ft tall pergola that this would be hanging from and I wanna make sure I know about how high the chairs would be suspended from the ground and get whatever else I might need for full setup.
