"I was told to basically keep it damp until the tap root hits the water then I could run the water feeders 24/7. Sound about right?"

Sounds exactly right.
You have more than enough air.

My rockwool drip experiment ended with stem rot.
Admittedly It was a very limited experiment and may have been coincidental.

Use your nose.
Sniff the cube every time you pass by.
You'll know if it starts to go sour.

Aloha,
Weeze