Install flowmeter before setting up valves and controller zones?

I’m redoing my whole irrigation system and because of it my rachio controller is not connected to any valves at this point. Based on the anticipated schedule, the rachio flowmeter would most probably be installed before the valves would all become fully operational. Is that an issue in terms of the sequence of events that I’m listing? Does it work just to connect the flowmeter but not do the calibration till a couple of weeks later when the valves are all set up in the controller?

@jorobins - that schedule should work fine. The flow meter can warn of high, low or unexpected flows - but as there won’t be any flows …