Tonski, you don't really need a veg room if you have a mother somewhere who can provide you with clones to fill your box. You can just go ahead and put the rooted clones in your box under JUST the MH on 24/0 for the first 2 weeks and then flip the lights back to 12/12, adding the HPS, for a nice Sea of Green. You haven't been able to do it that way yet because you need a source of identical female clones but if you are confident about cloning already, all you need is ONE decent sized mom under a light in a spare corner to provide all the cuttings you need.