The 3rd generation of CR-V is the only gen. that we have not owned, that said as long as your vehicle has the proper towing rating (here in the US our max is 1,500 lb but the European versions have a much higher rating) you should be good.
Hopefully it has a good service history, change out the transmission fluid and the AWD fluid with Honda fluids (only!) right away if there is no documentation of recent service.
The AWD system is FWD until slippage is sensed then torque is sent to the rear wheels. The system has been used in various Hondas way back to the late 80's so it WORKS.