Sounds good. if you used a drip system, you've have to buy or build the plumbing necessary and while this may not sound bad, it makes things more difficult. Why do that when you can bubble? The problem with using large totes is that they tend to require a lot of water, but you may not mind that so much. Just remember that dwc grows kick ass when done right so don't put this in a small space because even two plants can overgrow a large closet. If you want to try the plumbing route later, this will give you time to design and build. However, if bubbling works, don't change it. Now you consider your ferts. you'll probably want to get a pH/ppm meter if you don't have one yet. pricey, but worth it.