I use those pressures on a daily basis. They are the fully loaded pressures but I find that the car is just better when using them regardless of load.
Page 217 of the attached handbook shows the pressures for a 2006 Doblo. The Cargo is listed with the pressures mentioned previously for your tyre size but yours is an 02 so it may not be 100% the same.
You won't have much of a problem, as I mentioned before my older doblo needed more air in the tyres!