In the installer setup table for the honeywell focus pro 600 wireless thermostat it requires that the system type be chosen. Choices range from 1 heat/1 cool conventional to 3 heat/2 cool heat pump. With my system (lennox xp 15 heat pump and CBX32MV Variable Speed Air Handler) would I chose the 2 heat/1cool option?

Yep,, if you have 2 heat resourses and 1 cooling resourse,,
You do have a heatpump ,with a furnace, I assume
Let us know if you need anything more