Those numbers sound like they will work for you.
Good luck!
PS. There are a few ways to learn more about the DAQmx functions. On NI there are tutorials like Getting Started with NI-DAQmx: Main Page. In the example finder, there are dozens of example VI's showing DAQmx. Also, in a copy of your VI, (since the following steps might be undoable), right click your DAQ Assistant and choose Open Front Panel. That creates a normal subVI you can open and see the underlying DAQmx code that the DAQ assistant had configured.