First actual "room" grow room

Hello all, first post here

I'm nine days into growing in my first real room with specific equipment, rather than hand watering under floros in a closet. It's been exciting as all hell, and things are going well for the most part, but I have a few questions for the masses here.

First, how do you gauge when to transplant rooted clones to their final buckets? I bought mine in rockwool or peat cubes, then planted those in coco in plastic beer cups to get sort of a "root ball" like I've read, before moving to their final containers. Does the root pic below look about right or overkill?
https://www.rollitup.org/members/primitive1-albums-heh-picture14488-roots-transplant.jpg

Also, my second batch of clones is three days into the cups(batches because the clubs here rarely seem to have more than a dozen), and is proving more problematic than the first batch; most are doing fine, but a few are burning and curling beginning at the leaf tips, and one has died. I changed their distance from the lights several times, but that seems to be no help, and I'm using the same nutrient/root booster solution that i am with all the healthy ones. From the pics below, any ideas anyone?
https://www.rollitup.org/members/primitive1-albums-heh-picture14486-many-sad-clones.jpg
https://www.rollitup.org/members/primitive1-albums-heh-picture14487-sad-clone.jpg

Oh, setup is 3 4x4's, 3 1000w HPS air cooled, 6'' in 8'' out with can filter. Currently vegging plants and clones under the HPS until I finish an enclosed area for a MH+LED vegging box.
https://www.rollitup.org/members/primitive1-albums-heh-picture14492-yeah.jpg

I'm not a pro experience wise, so I won't offer any tips, but your setup looks pretty good at the moment.

time to transplant.

dont give your new clones nutes for a week.

use the hps for flowering

Thanks for the response, I was transplanting that one when I took the pic, my question is, does that look like overkill, i.e. can I let it root less before repotting them?