David, Welcome to the forum and thanks for posting your beautiful false color IR shot.
Originally Posted by DavidB
But note that most IR shots can use the same WB!
So once you've set the profile in the Camera Calibration tab and chosen an appropriate WB you can save these in a LR Develop Preset and quickly apply them to the relevant shots. In fact, you can save these as part of a new Camera Raw Default for both systems.
True, and that is helpful time saving suggestion, but it would be even better if ACR/LR didn't mess up the camera custom WB when importing the raw files. I find that even with a custom camera DNG profile with adjusted WB, files often need some additional WB tweaking. C1 is the only raw converter I've found that correctly applies the camera custom WB and usually there is no need for further adjustment. I prefer the LR workflow, but just wish it interpreted camera custom WB like C1.