Oh yes, that'll make a nice brooder. I use a 110 gallon black stock tank for my brooder. Your water trough is probably pretty large, so it'll work just fine. Now if it's really huge, you might need a brooder lamp at each end. That's what I do with mine at first when the chicks are really little. They need it to be really warm. If they get chilly, they get pasty butt. (That's when their little tush gets dried poo stuck on it so badly, that if you don't get it off, the poo wil clog them up and they can die from that.)
For your chick waterer, make sure that it's elevated a tiny bit. Chicks will kick up the shavings and then fill the water tray up and then it's a total mess. Also, if the chicks are tiny, sometimes it's good to put marbles in the water tray at first, because they can get in there and drown, believe it or not. That can happen to bantam chicks.
If you want chickens that provide nice brown eggs, get the red pullets from
TSC. They are awesome egg layers. For bantams, I believe
TSC sells the bantams mixed, and straight run, so that you really won't know what breed you're getting, so that'll be kind of fun because it's kind of a surprise to see what they grow up to look like. The bantams are a little bit more delicate as day old chicks, than the large fowl chicks, so you've gotta keep your eye on them.
Take care and I hope you have fun with your new chickens,
Sharon