The point of Anti-wilt is to give the cutting the best chance of surviving. That product is a food grade wax with some nutrients built in. It will seal the moisture into the leaf and stem. This will help keep the plant moist but still allow you to mist them with water. You do not use a humidity dome when you use anti-wilt.

That was an Aeroponics cloning 101 but Rockwool is fine if you like that stuff. Just make sure you soak it in Ph adjusted water to 5.2 for 24 hours before you use it. The Rockwool needs to adjust and balance it's ph to the proper level or the plant will not root.

There are some products on the market these day's that will do that for you too. I don't use Rockwool at all so I don't have direct use if those products but I do know many who love them..