If it's a SaaS, you better incorporate in HK and you'll have zero taxes if you blacklist local (HK) market. It is also fully stripe compatible. It would also shield you from problems.
The moment investors come in, they'll ask you to re-incorporate, easy, Delaware companies are made rapidly anyway. You can also choose Singapore but it has more upfront cost and management than HK.
For investors it's better to keep the structure "easy" anyway as they'll ask all sort of things regarding the company structure, better to straight re-incorporate.
If you don't plan to have investors, then having a company in the US doesn't make much sense for liability & taxes, seeing the world is open and it's all remote anyway.