Many people check the chicks in the morning before they leave for school or work, then next check them when they get home. And many of us sleep through the night without getting up top check on the chicks. If you can, checking on them more often is better, but it is not always possible. Just do the best you can.
People have used all those and many other things as brooders. As long as you provide one area in the brooder that is in the right temperature range, it is draft-free, and it is predator-proof, any will work.
I personally prefer something bigger than smaller. You'll be surprised at how fast they grow. Don't forget to cover it either, usually with wire for good ventilation. You'll be surprised at how soon they can fly out.
Especially if you cannot be around a lot, I think they are safer in something bigger. One of your bigger risks is that they get too hot or too cold. If you have the brooder big enough that you can keep one area warm enough but allow the rest of the brooder to cool down below that recommended range, they will be able to find their comfort zone. That way you do not cook them of chill them by the brooder getting too hot or too cold.
I use a home-made 3' x 5' brooder in the coop from day 1. One area right under the heat light is in the right temperature range, but the far corners cool down 20 to 30 degrees cooler than the recommended range. I find they tend to spend the first couple of days laying under the heat lamp, but by the third day they are playing all over the brooder, only coming back to the heat to warm up when they need to. That is not as often as you might think. They do sleep in a pile under the heat, but during the day they are all over.
Good luck!