Since no-one else has responded, try this:
Put all your equipment on the stand. If it doesn't take the weight, then it is not fit for the purpose for which it was sold, in which case the supplier is obliged to refund you your money. Of course, all your equipment could be knackered, but hey, you can't have everything!
Seriously though, it states 200kg+ on the page you linked to. I think it will hold everything you've got & a bit more besides...