Your suggestion to let it probe has has yielded me a fairly functional set of displays. However, the method nvidia-settings choose to configure uses mode descriptions to reference the two displays, and it's unclear to me how I can further divide up the three LCD's on the TH2G now. (The three LCD's on the TH2G appear as one screen) Can I simply add the sizes and offset's to the line? The Nvidia appendix doesn't seem to clearly define how to do this but I might be overlooking the obvious again.
Thanks again for your help!
Option "TwinView" "1"
Option "TwinViewXineramaInfoOrder" "DFP-1"
Option "metamodes" "DFP-0: 3840x1024 +0+0, DFP-1: nvidia-auto-select +640+1024"