名媛直播

Hello, all! I'm not "new" to 名媛直播 as I'm not really "into" it. However... I've been propagating some Ficus Benji's and was thinking that perhaps one of them may be able to become a 名媛直播.
My question is...
How large must a root system be before planting into a 名媛直播 pot?
Would it be in my best interest to plant these cutting in soil first and then later move to a 名媛直播 pot?
My current clippings are showing moderate roots while in water.
Any info/advice/suggestions would be greatly appreciated...
Thank you.

Welcome to the bonsai community! I wouldn't plant into a bonsai pot soon. Plant in a 1 or 5 gallon pot. Pictures would be helpful to see the size of your seedlings. To answer any of your other questions we do need pictures!! I can offer more advice when I see your babies