Will 100 crayfish be enough for first stocking?

Also I am confused on the variety of FHM and Shiners. On the Smtih Crrek Site, he has FHM and Rosy Reds - I assume these are all FHM. Just different varieties? And he lists "shiners" - are they all the same, as in GSH? I would like to have some forage diversity, but it looks a if my options are FHM and Crayfish to start with. I am a little leery of the GSH due to size and eating habits.

I am looking forward to my fist perch meal. Patience if a virtue, they say.