I've been tracking it and so far it's been a week. Says will be here Thurs. August 18th. Kinda slow huh....but I'm patient. I've even been dreaming about it. It must be all the DAYS spent reading Roseman's guide and anything that refers to the system. I saw this kit and ordered it right away. A local shop wanted 3 times the money for a 6 place DWC with a stand. ALso...I found a site selling fox farms goods for 25% off retail...all three solubles for $65!!
Just keep reading until it gets here--the first couple of weeks you are getting up and running you will be back here often checking little things while you figure stuff out. Personally, I'd tell you to pick up two 12" airstones and some air tubing/connectors from the local pet store. I immediately upgraded the bubble disc to this setup (an airstone positioned under each row of 3 plants) and have never looked back.
Next, I'd advise you to pick up a good PH tester as I relied on the vial test kit at first and the PH meter is so much easier. I opted for the Hanna 98129 and have no complaints. A PH level that creeps up is one of the first hurdles you'll need to clear.
It's a nice setup though, so enjoy the ride.