you probly could pull it off if you do this...

start em inside at 16/8 lightcycle (try to keep your grow area about the same temp as it is outside, to reduce transplant shock), give em a month or so for veg growth, then move them outside. it will should force them to flower. and they'll probably do really good cuz the weather will just keep getting better as they mature.

the lengthening of days towards the end of flowering could either be extremely good, or it could be kinda bad.