Family member as Officiant

Universal life church is incredibly easy to do. Then once he receives the documents you should reach out to the county you are getting married in and ask them if he needs to do anything else to legally officiate your wedding. Some counties make you pre-register, but most do not.

Check with the county by telling them your FFIL is ordained in such-and-such group but we need to know if any additional requirements are needed to do the marriage here.