Large Portable Zoom Room design for up to 40 people

I'm designing a portable Zoom Room design for our quarterly designers meetings.  In July I used a Neat Bar Pro and it worked very well.  The cameras was amazing but I believe I pushed the limits on the microphone when having 40 people sitting classroom style.  Being that the Neat Bar Pro doesn't support third party microphones just yet, I am looking for a solution so that if I am using an appliance or a Windows or Mac based ZR, I can add additional array microphones to pick up the back of the room.  Again, this needs to be portable and easily removed (no fixed mounting).  What ZR solution and microphone solution would you recommend?

Thanks,

Jason