I would say that the better-rooted of the two is most certainly ready, and the less-well-rooted could have used a bit longer in the rooting environment, but might be okay if you have the right sort of well-drained, well-aerated (porous) potting soil for it to go into. However, for better answers, please check out the African violet forum instead! This one is for members of the genus Viola, whereas yours are of the quite distantly related genus Saintpaulia. Good luck!