I’ve never used the “pucks”. I use the pellets: add 10-20 ml of water and they expand filling a standard size egg carton receptacle. Technically, although I’ve never done it, you can transfer coco straight to a hydro system. I prefer to transfer to rockwool because the way I do it the seedling is supported at root and base a little better; thus, eliminating any need to stake them. I know this doesn’t really answer your question outright, but, coco is coco is coco. What works for my pellet starts should work for your puck starts.
Great gravey! That is quite a list of ladies you have coming. Over my years of growing, I have grown just about all of them. But, seeing as you are on your first time, I would recommend the Blue Dream. It is very easy, and forgiving. It responds well to LST and HST, and it has a good yield. Remember, while cannabis is cannabis, each strain has its own personality, so to speak. Until you familiarize yourself with how the strains grow in your environment, I recommend taking it slow, and scientific. Changes can work great on one plant, and shock another. While one plant seems to be excelling in the environment, a different strain may struggle in comparison. Go slow. Be exact. Write down observations, and measure then compare.
Back in my co-op days we got some Starfighter going (best freaking weed I’ve ever smoked, btw). We placed it in the same conditions as some God Bud and some Girl Scout Cookie. We were using a RDWC system. After 4 weeks, it was clear to us that we had a problem; as, the GB and GSC were humming right along, but the SF was struggling. We isolated it to nutrient load variance. Once we got the SF on its own system and changed the nutrients it worked out. The moral of the story: like people, cannabis in all its shades have similarities to each other, but, the differences are what make them stand apart as individuals.
Never ever, ever, apologize for asking questions. That is why we are here!