My speculation is #4 and #5 will not be at RockTenn. A guess might be one will be located in the NYC area to process municipal waste.
I am guessing the master plan for RockTenn has been on hold until the operating metrics for the processors was determined.
Will the processors do 4000#/hr or 8000#/hr?
Will the up-time be 50%, 75% or 99%?
That information factors into logistical considerations.
The performance of the new processor likely needs to be taken into consideration for RockTenn facility designs. I expect the plan to emerge soon and for rapid installations at multiple RockTenn sites, Jacksonville first.