Assuming the operational guidance have the general idea correct....this is a funny looking system for our parts. Definitely not our traditional WAA transitioning to CCB set-up. It reminds me more of a great plains blizzard where the system gets so wound up and precipitation is focused into an intense 100 mile wide band. Except in this instance the band doesn't sit and rot over one spot, it continues its march north.
If we want high end totals, then I think we want this thing to slip eastward rather than northeast ward. Keep the flow of Atlantic moisture for as long as possible. Otherwise it's really just a 8-12 hour thump. (which is still nice).