I dont have a problem with 18/6 or more just looking to save these genetics. How long can i keep a plant in veg state, i dont belive either of these strains are auto flower. What else should I do to make this work. All feedback is appreciated.
You can veg a plant forever if you don't shorten the light cycle...
Depending on how long till harvest, I'd probably cut a few ends off the lower branches and try to root them now, and when you finally harvest I'd attempt a re-veg.
To clone you cut the branch at an angle to expose more of it, scrape a little bit of the lower inch of the stem, dip it in rooting powder, and put it in a moist medium that isn't sitting in water. Probably just read up on cloning as they go through all the steps. Big thing is it needs less light, more humidity but not soaking, since there's no roots if you give it too much light it'll kill it.
For re-veg I'd carefully dig around the plant and try to get as much of the root ball without destroying it. Put it in a pot or bucket with holes, harvest most of it, even cut in half, but leave a couple lowest branches with leaves. Then water it with some N to promote growth again, put it in darkness for 3-5 days, then put it under light.
Others will have more experience than me. That's just what I would do.