Starting a small business with digital products

Hi! I am starting a business that provides digital products. I have not launched yet but I want to make sure I set everything up properly before launching so I do not run into any problems when it is time for taxes. I did sign up for stripe and it did give me an option to remove taxes is that a good idea? Or should I worry about it at the end. I jus want to make sure I am doing everything properly. Should I set up my LLC and business bank account before I launch or should I wait until I launch to do it? Any other suggestion for me as a new business owner?