Beautiful man. Stick with the hydro, seriously its not rocket science and your already all set up. You already know what you need to change for your next run, clean like a son of a bitch and fire her back up!!
I do a top feed as well with rockwool cubes in lava rock. I have two 1/4" feed lines into every 5gal bucket, For the first 2 weeks AT LEAST I leave my two feed line right to the OUTSIDE edge of the bucket. As far away from that damn cube as possible. However, twice a day I go into the room take the feed lines and manually moisten the rocks surrounding the cube, leaving about a 1.5" area around the cube untouched and dry. If I notice my cube totally dried up and the plant looks like it could use water I might slightly moisten the cube, but I want my roots "searching" for water and leaving that cube ASAP.
Anyway good luck.