welcome to the great world of cannabis.com great to have you here with us growing, sounds like you've done your homework, cool now it's time to go for it.
Take a clone from a plant and force the clone to flower is the way to do it if you have the flower room setup. The this way you can have moms that will save you time. Take the clones from the bottom unless you plan on topping or bushing them out... Every time you cut you need to let the cut regrow out a few weeks before you flower unles its a lower branch that would'nt help you....
peace