I would put the wetting agent in a separate tank well in advance of the final immersion to let the agent disperse in the water then not do any inversion as it can create bubbles which can dry on the film requiring a separate washing to remove. I would never squeegee or take the water off the wet negative as its easily scratched when wet. The wetting agent will cause even drying and drip of the end of the film when hanging up. Remember to put weight on the bottom of the film when hanging up.