White Phantom Haze Pupleishious Widow Gum.. Hahahaha!!!

I think you should leave them outside to finish. As has been said before, there's no better light than the sun.
These plant appears to be just beginning flower... It will start filling out in a couple weeks. I would estimate 4-6 more weeks til harvest... But definitely check the trichs and let that be your guide.

If you still want to try an inexpensive indoor grow, I suggest CFLs and hempy buckets....