In response to the OP, in this situation, if there is essentially no on-stage sound, then I would either go with the stand in the room, (but I always get sketched running my cables across traffic, even taping them down) or, it sounds like the PA is up high, so if there is somewhere to clamp up top and hang your mics, and run the cables along the ceiling back to the board avoiding the cables on the ground. My preferred MO in these situations. Superclamps rule.