Rezoning Neighborhood Meeting

We are currently rezoning a parcel from single family home to multifamily, and the plan is to develop 14-townhome units.  The City has contacted us with a date for our rezoning hearing.  The City is requesting that prior to our hearing we need to conduct a neighborhood meeting.  The City sent us a list of neighbors that we need to send meeting invites via mail.  We are in the process of producing the invite letter, and one of our questions is what the letter invite needs to say.  

Also, this is the first time my partner and I are going through this process, and we have a few questions about the format of the meeting.  What should we focus on?  Do we need to handle the meeting alone?  Or would it be better if we bring our civil engineer to the meeting? We would like to get more clarity on the owner/developer expectation, so we can prepare for it. Anything that you can share to educate us on this would be appreciated.