Also, sub cabs in applications like this like to be on the ground, and usually loaded near an additional boundary (side wall or even a corner).

You CAN fly a sub cabinet if (it is has flypoints)...
but you will want to avoid it.

Also, if a cabinet does NOT have flying points, do NOT just screw in some eye bolts and hang it that way... choose another cabinet.

If you cobble together a cabinet and hang it, and it falls and hurts someone, you will be in deep sh*t.

BTW, if you absolutely need to fly a sub, you can do a LOT worse than that Bose cannon... those things are insane in large spaces.