Pine frame? Don’t expect it to be weatherproof longer than a season without maintenance. Pine is ridiculously soft and doesn’t weather well.
It’s great for a Cub Scout race car but I would be concerned with a pine framed anything and the outdoors.
If you are willing to take it in in the winter and treat the wood (possibly annually) you should be ok.
I would think it is so soft that it would bend quite a lot with 450lbs capacity.
So not that I’m saying “give this a chance” but as someone who has previously purchased a Vivere metal frame hammock and absolutely loved it, I am curious about the durability of the stand if anyone has any experience. It’s faaaaaar more attractive than the metal stand is.