That is a big pump for only 9 gpm max flow needed. Make sure it is throttled back to the flow you need max, so you don't waste all the pumping power. The zone valves are good, have their end switch connected to the GV zone manager out of John Manning's store, so the pump shuts off when no zones are calling. Then you should have the most efficient set up I can think off. Check the control logic of the unit, the dip switches can usually set to minimize the blower run time prior to compressor start.