In your space you should be able to find a dehumidifier that would work pretty well for you.
I can't see why that deep blue c would stop growing. It looks real healthy and in my experience photoperiod Strains just keep right on growing as long as it's in veg. When I was doing photos I liked pot up to about a 5-gallon pot about 2 weeks before I was ready to flip, then I would pretty much use up all the nutrients in the soil by late flower and that's when I'd hit it with my Bloom nutrients. I used to take clones in flower if I wanted to sometimes it be a little bit slow rooting but you know you can do that too.
I can't see why that deep blue c would stop growing. It looks real healthy and in my experience photoperiod Strains just keep right on growing as long as it's in veg. When I was doing photos I liked pot up to about a 5-gallon pot about 2 weeks before I was ready to flip, then I would pretty much use up all the nutrients in the soil by late flower and that's when I'd hit it with my Bloom nutrients. I used to take clones in flower if I wanted to sometimes it be a little bit slow rooting but you know you can do that too.