Before you go and flower that puppy why not at least take some clones in case it is a female. If you take a few clones and the thing does turn out to be female your just that much more set for a future grow, especially if your gonna take some of the advice given to you and buy more lights at least it would make new lights even more worth your money and get a little clone experience under your belt. Showing any signs of sex? Good Luck
Respec