Drip vs. DWC

Hi I'm a newb, and I think I may currently be using both a drip method, and a DWC method at the same time.
Should I be doing this, or should I just stay to one?

My roots are partially submerged, but that's only cause there small at the moment. I also feed them via water pump.

It works fine that way, what medium are you growing in?

Rock wool.... umm I'm using SH nutes (stealth hydro) BTW