or do you simply put them in 12/12 asap or as soon as the roots become strong enough/grow from the newly cut clone? let me know.
Honestly man, you can put them in 12/12 if you want. The problem is that they start budding fast and don't get too big... This is fine if you have lots of clones...
So if you have lots of clones and a whole bunch of 2inch netpots, and a nice aeroponic clone starter tray, you could do real nicely to just take the clones all the way to budding finish 4 weeks later.
With 12/12, you can get double the clones and keep the bulb on 24/7, just rotate the clone trays. It's room efficient, and I think; the way to go.