I assume that you are talking about the clock master. Normally, that should be inside the DAW and not by one of the outboard instruments. Clock information will be fed to the instruments via the MIDI interface.
I think all three of your instruments have only analog outputs without a digital option. So, you will not have to worry about matching sample rates. Depending upon your interface, you may have some setup issues between it and the computer - but no issues with the instruments. Usually in these setups, the "Local" control in the instruments is set to "off" assuming that you have set up both MIDI in and MIDI out with the interface.