Bart’s suggestion is very relevant and a good one, and it will work as long as you continue using C1 in future. My crystal ball is a bit misty, not showing me what I will use in 5-10 years time. I certainly would not want to process all those files then. That's why I want some kind of a 'universal' format.
I have no problems with 206Mb data files myself and storing 16bit TIFs gives me great ease of mind. And disk storage is cheap, you’ll get about 30.000 of your files on a 6Tb drive. This ‘no problem’ may have something to do with my past, needing to cope with 650Mb scanned slides (6x7cm, 4000 dpi, 16 bit).