Moving a plant from the grow room to the yard.

So I've got a mostly Sativa female, been in 12/12 for just under a week but it was showing preflowers the first day. My problem is this pheno is throwing off my grow area. I've got 2 gorgeous stocky mystery indicas growing and they are virtually identical. Very manageable compared to the lanky sativa.

So I want to move this single plant outside. I've got an old cracked 5 gal bucket that will drain.. My plan is just to fill it up with the same soil mix it's in now and transplant it.

My lights are now on 10pm-off 10am. It's basically going to flip. Sunrise/set here currently is 6:15/8:15. A couple hours longer than it has now but it's getting shorter. Is changing the schedule going to have negative effects? And will the extra hour or so of light hurt it? What are the odds of it revegging due to an extra hour of light? Or is it close enough that it will keep flowering?

Should I just transplant it and put it outside one morning and give it 24 hours of light and then switch or should I take it out at night and give it 24 hours of dark before the morning? Is one method "safer" than the other in preventing shock or herming?

24+ hours of dark. Moving to the longer day may slow/delay flowering, but not for long.

Yeah I was leaning extra dark myself. Just wondering about hardening it off again, even though this bitch has been through a lot in her short life, she is green and lush despite a previous overwatering. Pistils are forming daily now and full flower is less than a week away. I've got time. I may keep her inside for another week and let flowering kick in full bore before moving her outside so maybe it will lessen the delay or effect on flowering that the longer day may have. Being a sativa I hope it won't flinch.