Paul,
The effect of developemnt is a lot different than developing a VDB. The developer is poured on quickly and wosh the full image appears almost instantly. Depending on the humidity and exposure the print out of the frame before development will be a whisper of the image.
I don't recommend esposure by inspection for any of the POP processes since each time the contact printing frame is opened the humidity of the print is affected. Print by time or exposure units, IMO.
Kallitype was one of the most difficult processes for me to tame (except for carbon which I am a novice). Paper staining was the primary problem and it just about made me quit the process a time or two.
Partial toning with selenium followed by gold can create beautiful tones. I've used KST but it needs to highly diluted to prevent bleaching of the print. No matter how I tone the print I use the toner as a 1 shot using a flat tray.
Good luck and have fun if you try this process.
Don Bryant
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