Nope, those are more for adult chickens to help keep them warm in their coop.
These are the brooding plates.
https://www.premier1supplies.com/p/heating-plates-and-covers?cat_id=226They mimic a hen in that the heat comes from above. You can adjust the height as they get bigger. Just don't go by the # of chicks it says it will allow. It will hold that many when they're just hatched, but doesn't take growth into account.
Your chicks will be fine for the drive home. Just wait until you get them home. Then introduce them to water but dipping each one's beak in. Even without a hen, chicks are really good at figuring things out for themselves.