As @kezo says, I have the exact car that you are getting. PHEVs only make sense if you can charge them at home after every use. Once the battery is depleted, the car isn’t very economical due to its heavy weight and its insistence on using the petrol engine to recharge the battery as well as drive the car.
The good news is that you don’t need a home charger and a granny charger is all you need. Hopefully you can find a way to charge the car at home, as this is essential with a PHEV. Charging a PHEV away from home is pointless. PHEVs charge at a much slower rate than EVs, the EV range that you get is minimal and it will cost you more to get that tiny bit of range from a public charger than it would cost to just drive those miles on petrol.
In all honesty, if there is any doubt about being able to charge the car at home after every single use, I’d cancel and get a self charging hybrid. As @kezo has mentioned, there is a very long thread that covers his and my journeys from testing the car, ordering it, first impressions and running costs over the past 7 months. Interestingly, neither of us are entirely convinced about the whole PHEV experience. Through choice, I’d go back to a petrol.