Welcome to the site! You have already been directed to the stickies and care sheets, so I'll just add a few comments.
Like Deb said, don't get a non feeder. That's a headache you do NOT need! It is true that you have to assist fed=put the pinky in the bps mouth, but that's only if the bp won't eat. You should be able to find a hatchling that is eating, there aren't that many that refuse to eat. One thing to look for is a baby that looks chubby, if it's skinny, look the other way. BPs should not be skinny unless they are super young hatchlings or not eating, you don't want either of those.
As for the heat cable, it depends on how hot it gets. You need it to get no hotter than 95 on the hot spot inside the tank. If your cable is hotter than that you will need something else. Also, I assume you heat cable is under the tubs and not inside of them?