The best answer you can get is from your state.  Because if you are acting in two capacities and outside the scope of the LLC really and circumventing the law, they are the ones that will indeed come after you and fine you if you do not have a required license.  Contact the state attorney general's office and the state licensing bureaus on the matter.  They generally list on their websites businesses that are required to be licensed and if it is not clear then contact them for a advice or see if they can render a formal "opinion" to you in writing of your obligations under this situation.  I am sure the LLC is not for management purposes but it may not matter.  And make sure that you have errors  and omissions insurance here as well.  Good luck.