A tip I picked up first from a model who also was a photographer and also used by Thorsten Overgaard, was instead of just shooting RAW, shoot RAW+Jpeg.
With Lightroom set to treat the jpg’s as separate files you end up with two versions of each file, colour RAW and a Black & White jpeg. You can then quickly see which one you prefer. Sometimes you prefer the colour and go on to edit the RAW file, sometimes the Black & White. When the Black & White looks fine as it is, no editing is required you can just use the jpeg, but if it needs a little or a lot of editing then you convert the RAW to Black & White and edit it. Editing jpegs is not generally a good idea.
