node spacing during flowering

what would be considered to be good node distance after 3 weeks flowering, i know this will be strain dependant but just on a rough guide based on.

indica
50/50
sativa

I can't answer. There are too many variables. It's mostly strain dependent, as well as the size of the plant, and where on the plant, but light and temp will affect internode spacing, and probably other stuff too.

How about 1-2 inches?