DAQ System Architecture

Hello, 
I am confused about deciding design structure for a daq system. I would like to share my doubts and idea about the DAq system which I have been developing.
In the system, the hardware consists of vti ex1266 mainframe and multiplexers. There is test room and test room is divided in 6 stations. Each room has own daq system. Daq system will have a user interface, daq unit, log and display. User interface will decide to channels which is going to be scanned. Also, it will have buttons and some parameters (like combobox , string control) to form the test name. Finally , it looks like I have 4 main units. So, what design structure should I prefer here?
Queue based ? State machines ? or what ? I wonder what do you think ? what will be the best solution for the software design ? 
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