I'd wait too, until they are drinking their water every day or every other day. Wondering why you would say that though, imo as long as the soil is a bit wet then the whole thing won't fall apart. And it's better to transplant before the roots start circling a lot.
I haven't done this with pot, but I do it with vegetables in seed trays, is just popping the root ball out to look at it and see if it needs to be up potted, doesn't seem to hurt anything.