If you want to make sure the choice-of-law provisions in LLC operating agreements you draft is valid, read the post under the link below:
https://www.lexology.com/library/detail.aspx?g=5b208b84-0aea-4ce9-a358-e012340a7e4c&l=8JVNXYN
Attorney John M. Cunningham
LLC Law and Tax - Asset Protection - 199A Deductions