You have two solo jumpers by the door, in front of a load full of tandems. Solo jumper A is doing a belly-fly jump and will pull at 3,500 feet. Solo jumper B is doing head down and will pull at 2,500 feet.
Generally, belly flyers exit before head-downers because freefall wind drift will increase the separation between the two. Also, low-openers generally go before high-openers, to prevent the possibility of freefall-canopy collisions. But in the above scenario, these two factors are in conflict with each other.
So, what is the proper exit order for these two jumpers?