Well I live in the desert so I don't think my plants would mind soaking in the pool for a while anyway. They'll take any moisture they can get I guess. Hmmmmm, I wonder if we could cross breed a cannabis plant with a succulent?
All different hydro setups have their pros and cons compared to others. IMHO, ebb and flow (flood and drain) is the most forgiving in terms of a power failure and doesn't use misters, drippers, or emitters that can clog up from time to time.
Again, IMHO a ebb & flow is a good choice for a first hydro. The roots are protected for a few hours if there is a power failure. More than a few hours of power loss you can manually flood the tray by pulling buckets of water from your res. and dumping it in the tray by hand. That will give you another few hours hoping the power comes back on so you get your lights back on.