This is a common misconception on the almighty internet, heh. No worries. Some people still choose a separate enclosure because their snakes are finicky and refuse to eat in the tank, but this is pretty rare. Since you're starting out, I would suggest feeding in the tank. The whole "tank aggression" thing is a myth, and as someone else stated, the snake may begin to associate being removed from the tank with eating and therefore become more bitey!
It does get a little more challenging if you're going to use lamps/bulbs. If you use a heat panel or UTH, the heat is in a more direct area, but DO NOT use one without your thermostat! (As you've already learned, they get way too hot). You don't really need a "cold" side in a BP tank--more just an ambient warmth. As long as your basking is near 90, you should be OK. What you do need to ensure is that you have a thermometer on both sides of the tank to ensure the whole thing doesn't overheat/underheat. The stickies are a great source of knowledge for husbandry.
I like saran wrap around the heat lamps/blubs. The aluminum foil may reflect the heat, especially if using lamps. Saran wrap works great, I tape it around the edges of the lid and it retains moisture wonderfully!
You're already well on your way by coming here! The folks here are very helpful and knowledgeable. I learn something every day! Good luck!![]()