I think we are down to this on D:
Miller/Trouba
Lindgren/Fox
Johnson (or Smith or Hajek)/DeAngelo
OR
DeAngelo/Trouba
Lindgren/Fox
Johnson (or Hajek)/Smith
Seeing as you would have a R playing LD and a L playing RD in the second scenario, and potentially have both Johnson and Smith in the lineup, I agree play Miller and go with scenario # 1. It is the smart play to start with. If Miller struggles mix it up. It also illustrates why DeAngelo is gone at the trade DL or next off-season. On this team he is a 3rd R dman at best, and even that will diminish once Lundkvist is here.