That size is extremely too large, even for massive adults, plus the height could be an issue unless your are planning to fill it with a lot of sand which gives an security issue, what type of lid are you planning on using for the tank?
Seperate territories sounds like a good idea as long as you have a solid divider down the middle that cannot be dug under or clambered over.
Any rocks/stones in a burrowing species tank need to be firmly secured to the bottom or sides of the tank for safety and any caves need to be secured together and also secured to the bottom or sides of the tank also.
You keep two in an undivided tank you will best case scenario end up with one fat scorpion, worst case two dead scorpions.
Your flippancy over the DWA aspect of these scorpions makes me think you don't currently have a license nor would you be granted one, they are extremely dangerous animals, exceptionally quick to anger and very fast to strike if annoyed.
Did I miss anything?
*Edit*
Seems I did, heat mats under tanks for invertebrates is a bad idea, they burrow to escape heat, your comments about them burrowing to get heat is partially correct, but they do this when the surface temperature has dropped to an unacceptable level, with using a heatmat underneath the tank, the scorpion will have nowhere to escape to from the heat and could potentially cook to death, also, heat mats inside any animals tank is an extremely bad behaviour both for the health of the animal and the safety of your home.