I hope this doesn't come across as critical; this is a terrible question. The thing that makes 'boring business' an opportunity is that the tech is irrelevant. How did you identify the market? What are your demographics? What unique problem are you solving? How did you identify an unserved customer segment? These are the questions that should be on the forefront of your mind. Boring businesses are rarely if ever engineering challenges. They are people challenges. Once you identify that the tech stack becomes a commodity. I know because I made this mistake numerous times in my early career as a software entrepreneur.