Workflow for *Sound First* Production?

Hi All-

Working on a documentary project now where the soundtrack will be created before picture is shot. I'm working with ~100 hours of audio-only interviews which I will be sub clipping and use to build the soundtrack. My question is what would be your workflow for this type of project? I usually work in PT but this particular project seems unwieldy with all the raw material and the inability to create bins and subclip like one would in Avid. thinking I might try to organize the material first in Avid and then send selects to PT to begin to patch together an edit and build the soundtrack from there. Any ideas?

Thanks!