If you are gonna run DWC, using hydroton, I highly recommend using an aero cloner or bubbler. that way you have no mess whatsoever and when they are rooted, you could put them straight into your netpots. While they are vegging, I would put all your net pots and use an ebb and flow tray to keep them happy, flooding about 6 times a day for 15 min each. Then once they are big enough, you can just take the netpot and put it into your DWC buckets.
You could also root your clones in rockwool and once they have roots, put them in a say 4" cube of rockwool, and feed them by hand. Doing it this way, entails putting your rockwool cube into a netpot and then adding hydroton. You will have to adjust your feeding schedule according to the size of the cube you have in there once in flowering, as the rockwool holds WHEEYY more moisture than the clay pellets.

I definitely recommend the first choice, as I have mentioned before you can get yourself into trouble using both if you don't understand or know what your watering schedule needs to be using two different growing media. I'm not saying it can't be done, but I like to keep things simple.