You are correct that when you're diving into U.S. entrepreneurship for the first time, it's extremely important to weigh factors such as liability protection, taxes, and your long-term vision. However, I think the most important takeaway is the difference between the two main options:

An LLC is the solid choice because it provides better legal protection and flexibility in how you're taxed, which is especially beneficial if you're planning for the long haul.

A sole proprietorship is much simpler and cheaper to start, but you must remember that it offers no protection against personal liability.

Ultimately, your choice should reflect the level of risk you're comfortable with and how ambitious you are about growing your business.