probably going to overgrow the tent, but this is not unusual for first grow... it's something that takes experience to learn.. and is a bit different in every garden as we all have slighatly different rates of growth for a plethora of reasons... some in our control, some not.
I see relatively healthy plants, but you'll see the true results of your fertilizer regiment as the plant ages and gets into bloom... tings that take months to build up or become deficient will rear their ugly heads.
At moment, i see the leaves on teh smaller plants are a bit glossy -- this can be a sign of N-tox...
but, photos can playn tricsk and something like a recent neem application can do that same thing. that said, take a close look with human eyes and if it looks shiny on surface, consider lowering N concentration as best you can while impacting other nute molecules as little as possible.
anyway, figure you want to fill about 70% of total Length x Width by the time you flip to 12/12. Plants taht double in size after flip will fit perfectly. plants that grow evenlarge might still over fill tent.
you can always prune some congested areas if it does get overgrown.. .the only drawback is the time spent growing it could have been avoided... better than moldy buds, though... you got a net, so you should be able to keep things fairly well spread out to avoid overlap and other issues that cause elevated RH or standing water on leaves.
i think you'll be happy with results... take good notes and learn as you go.. by your 2nd or 3rd grow you have a good SOP down and likely refined how you feed and provide light to the plant. I remember anxiety from first attempt. 2nd+ is easy as pie.