Rockwool in a ebb/flow (flood/drain) set up will work, but you are going to have a harder time dialing in your watering times. Rockwool stays wet for a long time. its really easy to get stem rot if your not on top of it. Even if you start your cuttings in too big of a rockwool cube and then put it in net pots with hydroton, there is still that chunk of rockwool keeping the base of your stem wet all the time. I think the easiest way is to get/make your clones bare root from a cloner machine, then put them in net pots with hydroton. I have my table flood 4 times while the lights are on and thats it. The medium has time to dry between waterings so I dont have to worry about stem/root rot. In your case BRANDON T with a top feed system with drippers or dripper rings around the plants rockwool should be fine. you will only have to water every other day or so (give or take 1 day lol) but like i said before, watch out for too much moisture and stem rot. If you use net pots with hydroton you will have your pump running ALOT more often to water. And Hydroton is a pain in the ass to clean the roots out of when you reuse it. I have a 4x4 tray filled with 6-8" of hydroton (4 bags) that i have 12 plants worth of roots to clean out 1 handful at a time. Its a pain. Rockwool you just throw away.