DWC is probably the largest yielding method for growing cannabis, but it's got it's own issues and learning curve. I'd say not exactly less room for error, but room for different errors.
Having roots right in the nutrient solution means special precautions need to be taken to prevent root diseases like pythium. In general you'll need to keep rez temps low (which is hard when it's hot). Most successful DWC grows I've seen use a chiller or sterilize the solution or use beneficial bacteria.
I believe in sterilizing with chlorine or chloramine based products as H202 just does not work. This means using something like Dutch Master Zone, or UC Roots, or pool shock/clorox.
Others have success with Botanicare Hydrogaurd, which is considered a beneficial bacteria.
DWC also requires solid pH, you'd need a good meter and to keep it calibrated etc.
It's a great method IMO and it's fun to watch plants grow so fast, but like every method it has its difficulties.
Good luck whatever you decide bro!