i'm by no means all that experienced at all, but from my own grows, yeah they looking fine pal, everyone will have different things to say but all i can say is you could be utilising the space more, you have lots of gaps with the light just hitting the floor not really being utilized so theres lots of space there that could be growing you more bud but just isnt.
You could do the obvious which is add more plants next time but if you don't want more then theres a couple others things.
You could LST them, maybe use a scrog net if it helps, thats what i use, you could possibly veg them longer, try filling around 60%ish of the tent just before you go to flower, other than that, to me theyre looking fine, enjoy em. :)