Look at your liability exposure. Sole proprietorship is the easiest but give you no liability protection. If the worst happens you could lose your house, car and all your possessions.

Limited Liability Company is better because although it has some added costs, consider them an insurance policy against future liabilities. Also for tax purposes the IRS treats a single member LLC the same as a sole proprietorship.

Sole Proprietor is how you want to go.
Definitely DON’T incorporate. Too many taxes.