Can I harvest my plant after 10ths of light?

Best to harvest in the morning and avoid harvesting at the end of the day(light) cycle at all costs, in my opinion.

If your gonna Cut if cut it

I would say chop it when you have the time to be honest - make it fit around you. You can always turn the lights off and have 24-48 hours of darkness before you cut them down. I often do that myself, although I couldn't honestly say that it's made the produce better as some say - more just a force of habit at this point! That said, it definitely didn't hinder the plant, so at least it gives you an option to chop when you have time and not worry about if you have to leave her in the dark for 2 days beforehand. Enjoy the fruits of your labour! :)

THC concentration is highest at dawn once the plant starts getting light and producing for the day, which is why people say to harvest after a lights-out period. Honestly, it probably doesn't make a huge difference in the end product though, especially for indoor grows. Outdoor maybe, but really you can harvest anytime during the day that works for you as long as you're in your harvest window and you will be fine.

lasciala al buio gia da adesso non dargli il ciclo di luce e hai risolto..io normalmente do 24 ore di buio