OK folks - straight off the stove and outta the rabbit hole.
Went back and using the most EXCELLENT little mixer app on the Red Wire site (registered owners only) I came up with a slew of mixed cabs to use as mono hi-resolution cabs.
And without further ado, here is what I am using:
Killer Mix IR Recipes 12 09 2010
GreeenbackMarshallBackCabRoom:
Marshall1960A-G12Ms-SM57-CapEdgeOffAxis-2in.wav,0.45
BasketweaveG12M20s-SM57-CapEdgeOffAxis-2in.wav,0.45
Marshall1960A-G12Ms-KM84-BackCab-1in.wav,0.05
Marshall1960A-G12Ms-KM84-Room-L.wav,0.025
Marshall1960A-G12Ms-KM84-Room-R.wav,0.025
BognerV30BackCabRoom:
Uberkab-T75V30-SM57-CapEdgeOffAxis-2in.wav,0.45
Uberkab-V30-SM57-CapEdgeOffAxis-2in.wav,0.45
Uberkab-T75V30-TC30-Back-0in.wav,0.05
Uberkab-T75V30-TC30-RoomL.wav,0.025
Uberkab-T75V30-TC30-RoomR.wav,0.025
VoxBackCabRoom:
VoxAC30Blues-SM57-CapEdgeOffAxis-2in.wav,0.45
VoxAC30Silvers-SM57-CapEdgeOffAxis-2in.wav,0.45
VoxAC30Silvers-TC30-Back-0in.wav,0.05
VoxAC30Silvers-TC30-RoomL.wav,0.025
VoxAC30Silvers-TC30-RoomR.wav,0.025
FenderTwinBackCabRoom:
TwinD120s-SM57-CapEdgeOffAxis-2in.wav,0.45
TwinJensenC12N-SM57-CapEdgeOffAxis-2in.wav,0.45
TwinD120s-TC30-Back-6in.wav,0.05
TwinJensenC12N-TC30-RoomL.wav,0.025
TwinJensenC12N-TC30-RoomR.wav,0.025
FenderDeluxeBackCabRoom:
TweedDeluxeP12R-SM57-CapEdgeOffAxis-2in.wav,0.45
TweedDeluxeBlue-SM57-CapEdgeOffAxis-2in.wav,0.45
TweedDeluxeP12R-TC30-Back-2m.wav,0.05
TweedDeluxeBlue-KM84-Room-L.wav,0.025
TweedDeluxeBlue-KM84-Room-R.wav,0.025
MatchlessBackCabRoom:
Matchless-G12H30-SM57-CapEdgeOffAxis-2in.wav,0.45
Matchless-G12M25-SM57-CapEdgeOffAxis-2in.wav,0.45
Matchless-G12H30M25-TC30-Back-6in.wav,0.05
Matchless-G12H30M25-TC30-RoomL.wav,0.025
Matchless-G12H30M25-TC30-RoomR.wav,0.025
BassmanBackCabRoom:
BassmanP10Qs-SM57-CapEdgeOffAxis-2in.wav,0.90
BassmanP10Qs-TC30-Back-6in.wav,0.05
BassmanP10Qs-TC30-RoomL.wav,0.025
BassmanP10Qs-TC30-RoomR.wav.wav,0.025
SoldanoBackCabRoom:
Soldano412BLegendV12s-SM57-CapEdgeOffAxis-2in.wav,0.90
Soldano412BLegendV12s-TC30-Back-6in.wav,0.05
Soldano412BLegendV12s-TC30-RoomL.wav,0.025
Soldano412BLegendV12s-TC30-RoomR.wav,0.025
OrangeBackCabRoom:
Orange4x12-V30s-SM57-CapEgeOffAxis-2in.wav,0.90
Orange4x12-V30s-KM84-BackOfCab-3in.wav,0.05
Orange4x12-V30s-KM84-Room-L.wav,0.025
Orange4x12-V30s-KM84-Room-R.wav,0.025
Mixed Celestion BackCabRoom:
Uberkab-V30-SM57-CapEdgeOffAxis-2in.wav,0.45
BasketweaveG12H30s-SM57-CapEdgeOffAxis-2in.wav,0.45
Uberkab-T75V30-TC30-Back-6in.wav,0.05
Uberkab-T75V30-TC30-RoomL.wav,0.025
BasketweaveG12H30s-TC30-RoomR.wav,0.025
CelestionG12LV30BackCabRoom
Basketweave-G12Ls-SM57-CapEdgeOffAxis-2in.wav,0.45
Uberkab-V30-SM57-CapEdgeOffAxis-2in.wav,0.45
Basketweave-G12Ls-TC30-Back-0in.wav,0.05
Basketweave-G12Ls-TC30-RoomL.wav,0.025
Basketweave-G12Ls-TC30-RoomR.wav,0.025
CelestionG12LV30BackCabRoom2
Basketweave-G12Ls-SM57-CapEdgeOffAxis-2in.wav,0.45
Uberkab-V30-SM57-CapEdgeOffAxis-2in.wav,0.45
Basketweave-G12Ls-TC30-Back-0in.wav,0.05
Basketweave-G12Ls-TC30-RoomL.wav,0.025
Uberkab-T75V30-TC30-RoomR.wav,0.025