I believe Northern Lights will finish fine there. I would just use the clones that you have, and try them outdoors.
I would add, when putting plants outdoors, I've found it's best to let the plant grow up outdoors. IOW put her out when she's small, like 5-6 inches, and let the stems harden in the sun and wind. She'll be a stronger growing and better yielding plant because of it.
So for you, that would mean take some cuttings in April or May.
HTH