On the way for delivery Monday is the smart booster from NCE, which as previously noted will allow me to operate with the five throttles I planned and the equal number of locomotives. However, this smart booster will allow the operation of up to ten locomotives.
Also on the way in the same order is my fifth locomotive, this guy made by Intermountain and sold by the great people at Spring Creek: https://www.intermountain-railway.com/ho/html/49812.htm
Penn Central did lease quite a few units from Precision when they were power short. I do recall seeing these units along with BAR geeps at times.