Compensating development

I am interested in using highly dilute developers (HC-110 / Rodinal, at dilutions of 1:100 or more) with sheet film in order to obtain a long smooth tonal range that successfully controls highlights. I recognise that this means very long development times - does anyone have a table of development times for this approach that I could use as an initial guide? I mainly use Tri-X, but might use FP4 for this purpose.

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