would probably harvest the first 2 anytime, they are getting close but may fill out a little more.
as per revegging it doesnt really look like they will, your last plant that isnt as far as long looks like it may be the best yielder would also be the best choice to use for reveging if you was going to attempt a reveg by throwing it indooors under 18/6 for awhile as it has more developed side branches.
you might consider starting more seeds or keeping a mother plant indoors so you can take clones at anytime veg them for awhile and place outside as reveg is slow and not something that I would encourage anyone to do.