Why a small PTO pump?  I've had good luck using a small gas-powered water pump with sprinkler heads.  I imagine that a high-pressure 2" pump would work for a small traveller.  Not sure about over 600' of 2" line though...

http://www.honda.ca/PowerEng/WaterPumps/HighPressure/WH20XK1JC1.htm?page=techspecs

Doesn't show the flow rate into various pressures but it seems to me that my local irrigration place told me they'd pump over 50psi.