Yes I think people are definitely over paranoid about males, a little pollen never hurt anyone really, especially at this stage as the above poster mentions....
These plants are a little on the frail side no offsense and they wont produce a whole lot but what can you expect when your doing this 12/12 from seed, otherwise they are pretty healthy and you have done a good job. Aside from the minor clawing Its going to be alright and patience will reward you with a satisfactory harvest however small it may be, It will be good if your moving to hydro for this style of growing much more appropriate, for me I like to have lots of big rooms with lots of plants and use soil just for the reduction in work that I must do. If your going to get a space upgrade stick with soil and spend a good 6 monhts on each plant vegging and flowering but just start a new plant every day or every week so that you keep up with your supply.
But yea ive grown a lot weaker plants then this, I have grown plants that produced a gram before lol(mostly autos)...these are going to be about a quarter to 10 grams each or a half ounce at best I would predict with your 600W, I also really doubt that they will be totally finished in 2.5months total time, your looking at like 90-100 days here if you want the best outcome. I know your in a rush this time around but 12/12 especially from seed is just not worth it, Id say it actually slows the whole process down at first. If you would of vegged for just 2 to 4 weeks you would be getting over 1oz per plant here and overall probably finish in roughly the same time frame. A good veg really is the most important thing. If you have witnessed someone on here do 12/12 from seed and have the plant actually fully finish in soil in less than 90 days Id be pretty surprised, unless it was an F20 or something they have bred out for a long time, or t hey just just got really lucky. Your going to get a rainbow of phenotypes here, Odds are that each of these is a different phenotype.
If you decide for some reason you have an extra month Id abort this whole thing to be honest, Id get rid of the males then flip it to 18/6 at a rate of one-half hour extra per day, Id then top them or start the first LST and veg for 1 month and then hit them up with 12/12, but you know if you just want to get this under your belt then that is all good also, you are DEFINITELY not going to be disappointed even if you stay on this course, that I can guarantee you, and the first grow is agonizing.
BTW, Pic 5 is male and the rest are too early to tell.