Yes, they are ready to be transplanted into their final pot. Their roots want more, you can tell by the look of them.
Be gentle and maybe try some mycorrhizae.
You can just put the cup into a bigger pot, after you created a high enough layer underneath. Then fill up the rest of the medium, press it gently into place and then remove the cup.
You get a perfect cup sized hole to put the plant into.
Give them a day to get used to their new home before feeding again.
Good luck on your grow! 😘