First time growing autoflowers

Looks like these girls are getting ready to bloom. I committed a cardinal sin or something. I transplanted 4AM2 (I'm gonna call her "2AM") and AK from their plastic pots into 2gallon fabric pots. the 2AM needed it, as her "pot" was probably a 0.75gallon protein powder tub with some holes poked in it. the AK didn't really need a new pot but I figured I'd go ahead and see what happens. now they're all in fabric pots together—MC and 4AM in 3gallon, AK and 2AM in 2gallon. The tallest, 4AM, has stretched quite a bit in the past few days but is still only 12 inches. MC is only 8 inches, wondering what kind of stretch she'll get. Regardless, these plants seem very small. I know 4am2 was messed up and flowered early, but even the bigger plants still seem tiny despite how healthy they appear in photos. They're actually quite dark when not under the grow light, which combined with the clawing suggests they got too much nitrogen at some point. With how small they are, I'm not really expecting big yields or giant buds. At the start of the week, they got their first taste of Tiger Bloom. I'm not following the Foxfarm schedule or anything, but I went for a very weak dose (i used 2ml, bottle says use 10-15). Their tips burnt ever so slightly from that, which is actually kind of good—it helps me know that I'm at least in the ballpark of what they can handle. Today (Feb 4), which is day 35 for MC, they all got their first dose of Real Growers Recharge. I've never used this stuff before, but kept reading good things. Felt and looked like i was serving them instant coffee. I have been worried that maybe the light is too close/too much. According to Photone they're at about 30 DLI, maybe a bit higher. I tried bumping that number up but I was getting some yellow tips at the very top so I dialed it back. I'm just going to let it ride for now, light at 75% @ 18 inches. Aside: one gripe about the XS1500 is that the dimming is stepped at 25-50-75-100%, as opposed to the SF1000 where the dimming is a smooth sweep. I tried some more LST but I was afraid to damage the plant further (I already broke one branch off) and the stems are getting too thick to really manipulate. Leaf tucking has been a chore, so I went ahead and did some defoliation of the three (not the AK). I took 2-5 leaves from each plant, over the course of a couple days, and feel pretty good about it. Lots of bud sites are exposed now, especially on the squat little Moonshine Cookies shrub. She'll probably get another haircut this week after she stretches a bit. (idk if this is any indication of anything, but when i rub the stems of the leaves i cut and smell them, they do each have a distinct smell. the MC has a sort of chocolatey gasoline thing going on, the AK is more of an earthy mint thing, and the 4AM is more like sugar or persimmon). Added a 120mm intake fan (basically like a computer case fan) at one of those vents down by the plants, just to get some extra airflow in there because the girls are so short and bushy. Tent #2 is 18"x30"x36", with a SF-1000 light. It has six plants in it; clockwise from top left: RQS Orion F1, RQS North Thunderfuck (photo), Blimburn Plushberry Auto, RQS Royal Jack Auto, Mephisto Zinfandel (i'm probably most excited for this one), and NASC Strawberry Banana (photo). The big plants are in week 4 (all three have been topped around day 18-22, and the seedlings are on day 4. I may have gotten a bit over-zealous. Ultimately I'd like to have a perpetual auto harvest going, so that when I chop a plant from the bigger tent, I replace it with one from the little tent, and then plant a new seed. I've got a whole bunch of Mephisto and RQS to get through before i'll allow myself to buy any more seeds.