Transplant?

Hello posted here a while back. This is my 1st grow, bagseed. Being inexperienced i did not expect them to grow so big. I am pretty sure they need to be repotted as i can see a root or two popping out of the bottom. Sorry the pics are off a camera phone, but is it safe to repot as I believe they are in preflower? Also something funky going on with the leaves. Suggestions welcome.
Thanks in advance!

Those post are big enough, unless you want em growing some more?
But you could put em the dirt to make em a lil bit shorter.

Deinatly female flowers in there.

It kinda looks like nute burn in the lower leafes, try flushing the pots realy good with water? You ben giving em lots of fertz?

Um I used FF grow big 2x's and mixed some mexican bat guano in when they were about 12 inches, but thats been it.

It looks more like mild potassium deficiency its not to bad yet. can you get a picture of one of the worst leaves? i think i see a few that are about dead at the bottom

If you're seeing roots coming out the bottom they may be getting rootbound and may be why the leaves are starting to sag a bit. Also looking at the pics your buckets are not even full of soil. I wouldn't take any chances and re-pot.

Thank you! I will transplant. Again just did not want to stress it too much since flowering.

Also here is a closer worse leaf pic