I use LR for keywording all my images, then upload to sites and set categories. import keyworded images into Deepmeta (only for iStock), do their horrible keyword thingy, although its easier in Deepmeta, set the categories and then upload. I'm not familiar with crushy stock so cant help you there.
Just a thought...I think keywording is the most irritating thing to do for most of us but it is the most important and well worth spending time to get it right, without the right keywords a buyer will never fing your image....