Too Big

If plants are taking up half of the possible height in which they can grow when they are put into flower, would it be best to cut clones from them now and not chancing if they can make it?

Not necessarily. Look into training your plants to grow horizontal. Actually quite easy, especially outdoors. If they get up to the lights, simply pull them gently down with garden-tie or string or ? to stakes or whatever. You attach tie-down just below the tip, careful not to snap it off, and pull, gently, and anchor it to something. As it grows up, you pull more sideways and it will train horizontal. A great way to increase outdoors yield. You don't want to top them now if they are in flower. If they are still veg, you can get away with it but it will set them back a couple of weeks if you top them in flower. Even in late veg! If you top them, by all means root those cuttings, even if in flower. If in early flower they will simply re-veg.

thanks laskabud! +REP!

Well, I'm starting to lean more towards the Dr. Node stuff now. I don't think bending these will be a nice experience...

That plant will be easy to bend. Just be gentle and don't try to pull down all at once but a little at a time. You don't have to bend over the whole thing, just start with the upper few inches to start. Good luck!

And won't there by more growth?? Horizontal once its bent over, if you know what I mean? or will it all still be vertical when its bent?