when to repot cuttings

Is there any guidelines on when it is okay to report cuttings from a large container into individual pots?
I have a bunch of Goumi cuttings and Mulberry cuttings that I want to remove from the humidity and heat and let them try warm and dry environment in my grow room.

Dennis, i think in mild weather you can repot them when they have pretty tiny rootlets, but you need to have a very small transpiration area. for softwood cuttings normally they leave only 2 leaves I think (at least I do). And they need to be in mild weather. I very much neglect them at that stage and as long as we are looking for a reasonable stretch (not very hot or dry, or with a freeze) I just put them where they will stay with a couple leaves. Maybe a little hardening period for a few days first.

Would several small leaves be an indication that small roots are forming?  

I will still keep this in my grow room at 80F for a couple more months but want to take them out of the humidity tent and put them under fluorescent lights.

I can keep them on a heat mat for a while but want to harden them up to dry air before I harden them up to cooler weather in late March.

Here are the goumi and some mulberry (World's Best Mulberry). I did remove the berries to let the cutting focus energy of leaves.

Do these look developed enough to have roots formed?

You can pull one of them out and see, if you are gentle should be fine. I would suspect they are not quite there.