I love rhubarb as well. Not sure I like the idea of drying it though. I have no idea about the Livingston type, I am not sure about the later growing season.
I pick rhubarb and freeze half. We have already had a picking from this years rhubarb and also eaten my frozen stuff from last March. I don't taste much difference. I just wash it, dry it off then cut it into bits and place on a tray in the freezer, Once frozen I bag it up. To use just thaw and then cook.
However, having said that I would be interested to hear what the rhubarb tastes like and how you cook it.
Bill