A questions for any structural engineers

[howdy20012002]

the stands will be 2 foot wide.
I will also be putting cross members from one truss to the other along the 2 8 foot spans(probably at 2 foot intervals) and along the sides.
that way it can't go anywhere.
unfortunately, I no longer have access to the crawl space.
but I think we did put braces anyways.
I will definitely be posting pics of it when it is up and running and probably as it gets to that point as well.
this will be one of 5 systems I am going to have in my house.