First time grower, looking for a few tips

My babies are a few weeks from being done I think, I'm just not sure what that prime time is yet! Can anyone help me out here?

I was thinking another week or 2 at least.. judging by the pics can anyone give me a better estimate?

A month.

My original thought was end of October, but based on the flowering/preflowering suggestions, they should be in at least week 5 or 6 now. I already started flushing and was prepping for 2 weeks? Should I add a little more food then for the next week or two then if theres still a month left?

They're outside also if that matters?