And a word on chest meals. This is just my personal preference and individual results may vary:
Don't plan cheat meals. Plan to continue your lifestyle, including things that may cause cheat meals to occur. Have a cheat meal because you go to a celebration for a friend and it's what they have to eat, or because you want to go to you and your spouse's favorite restaurant. Don't limit yourself in those moments because that would take joy away, and that joy really helps with keeping you happy and motivated in your new lifestyle.
The idea of a weekly cheat meal glorifies the bad food, and in my opinion is not a good thing. Your focus goes to the bad thing and you should not use that just to get through the week. If you deviate from your new lifestyle at any point, intentional or not, it's not the end of the world. Acknowledge it, go back to eating well and move on.