That is a great system. Have not looked at those in a while, but if I had known how good a deal they were when I started, I would not have built all my systems...err, maybe.
There is no reason to be afraid of growing using hydroponics or any method, as long as you make a plan, and know what you need to get started.
OK. That hydrofarm.
'A PH pen
A TDS pen ( I use a Milwaukee sm802 multi meter )'
A reverse Osmosis unit. (provides clean neutral water, and aloows you to know exactly what you are feeding your plants)
A nutrient system. Keep it simple.
If you can get your head around the idea of learning and following a few simple steps, and are willing to monitor your system daily; I have all the confidence in the world that we can have you growing large beautiful plants from here on out.