What kind of business should I register my photography company as? LLC, Private Owner, etc?

Just Go to the County Court House and Fill out a D.B.A.( Doing Business As) form and file it. If you wish to Incorporate you can do that at any time. Make sure that you Buy " General Liability ". For a Photography Business, this should be Very Cheap. I Carry a 2 Million Dollar General Liability Policy for my " Hot Shot" Service.