Tyre Pressure - Ford Fiesta 1.4 - 2 people but 35 kg of luggage?

I was wondering if someone could provide some advice on the right tyre pressure if 2 people are travelling in a ford fiesta 1.4L along with 2 suitcases weighing 35 kgs. The manual state I need to have 31psi in the front and 26psi in the rear tyres. I have the users manual which gives tyre pressures but wanted to know if 35 kgs of luggage in the boot / back seat constitute full load and do I need to increase the tyre pressure ??? Thanks !