Excellent idea and you should do the same for Sherman Hill these are the 3200s Union Pacific. Looking for heavy horsepower then get AC6000CW that way you have a freight train on Sand Patch Grade and Sherman Hill being 10.4k horsepower CSX & UP AC6000CW then combined with AC4400CW SD70ACE
I also want the SD70ACe-T4s: CSX ST70AH and UP SD70AH-T4. The AC6000CW is a good idea, too. Both UP and CSX had them.