To Model BNSF

You all know that I am a railfan, but I am also a modeler. I am going to model the BNSF in N scale. My Roster currently includes 2 BNSF SD70MAC’s, 1 LMX B39-8E, 1 B40-8W, 1 B40-8, 1 GP38. Does anyone have any suggestions which sub I should model?

I’m partial to the Twin Cities division, because thats where live. Here’s a link to BNSF’s System map. They used to list the sub divisions, but I didn’t see them on the detailed maps.

http://www.bnsf.com/about_bnsf/html/division_maps.html