Again, I am not an attorney and the laws are different everywhere. But it is my understanding that a PLLC is for “licensed” professionals, Doctors, Dentists, etc. And that those types of professions have to form a PLLC instead of an LLC. And I believe that a good tax accountant could answer this definitively as well as an attorney. So, if you have some one who does your taxes, check with them.
You definitely want to consult a business attorney or an accountant about that. That’s something you don’t want to make a mistake on.