If they are a month old they will probably show you their sex before their clones would. By the time the clone roots and show sex the parent plant already will have. Just wait another week or two and keep your eye on the 6th node. I believe that should be the node showing the 1st signs of sex. You dont have to flower a plant to find out its sex. It will show you when it is mature enough. Usually around week 6ish i have found. But if you want to go ahead and flowwer them you can do that too. Good luck what ever you decide!