You just don't want to spend the fees from bitcoin to dollars, or you just don't know how to open an LLC?
You should understand that
Setting Up an LLC is a more serious matter that requires understanding what kind of company you want to create in the future. That is, you'll need to talk about all legal issues with a legal consultant who will tell you about all the subtleties of opening your business. Also, this person can tell you if you can pay for this operation with bitcoins. I dare to assume that the lawyer will not take money from you with bitcoins and will give you a check for dollars. You know that bitcoins are not yet so common to pay for legal transactions with them. In addition, I wouldn't be sure that bitcoin won't fall soon, so I didn't allow you to pay for everything with cryptocurrency. Nobody knows what the course will be tomorrow or the day after tomorrow, man.