Basically, under 2 in of set is fine.
I have a plan for determining if the stave is ready to be strung. You can read about it on a build along on my site. The plan involves making sure the stave is reduced enough in potential draw weight to be strung...say 10-15 lbs over draw weight wanted.
If you make bows from white woods this us important.
The "floor tiller and slap a string on it" bowyers above are all accomplished and can sense when the stave is ready. Not so with beginners.
You do not gave to follow my method. Having a bow around of similar draw weights to check the feel of it's floor tiller would help.
Anyway, I am presently on an Ipad and am typing with one finger or I would type out my method. Jawge