Smaller or bigger plants/Pot size

Im on my first clone run, i have 13 clones and 4 from seed in 1 gal plastic pots. All are about 15 to 18 inches tall. My veg conditions have been horrible, mid to low 60s rh between 30 to 50. I have minimal control in my open unfinished basement. I'm planning to go to 2 and 3 gal fabric pots with 70/30 of hand mix coco perlite. Let them settle for a week or 2 and flip. Im going to a 4x8, where i have more control and i have 720 watts to work with on each side. I was also thinking about just putting the clones on one side and veg the 4 seeds in 5 or 7s for a month more before i flip them. That would help me get a pretty good perpetual going. I just loaded up with a ton of new killer genetics over the holidays. Also if anyone can help me find out this issue on 2 clones in pics? I hit them with a N/cal/mag foliar this week. New growth seems to be ok. Just looking for any thoughts, suggestions or opinions.

if anything probably overfed. those low temps wont require the plants work hard so they wont eat that much. what ec are you running?

Its in foxfarms ocean forest and i top dress, some 4-4-4 down to earth after a month. I've been watering with myco+ which is 3-0-3. I think you're right though, because they did have slight burn at the tips. I'm going to just water and seaweed extract until i top dress flower amendments.