During the video noticed that Zach was pulling up the calc & trying to do the profit margins in his head a number of times. Made a small google sheet that can be handy. Here we can see if the desired sell price is within the BOLL bands and decide the sell value immediately according to the desired profit margin. It's shared here. You are welcome to use it and improve it further :-)

https://docs.google.com/spreadsheets/d/1shIbYEOebeXicSjtNFnER5eC3D-ZIRT3i6l5u5qdj1A/edit?usp=sharing