Holiday Home Power Capacity: Estimating kW for 10-12 Summer Houses by the Sea with Appliances

Hello
I bought a construction and recreational plot by the sea and I have to determine for the Energa operator how many kW of connected power I want. I plan to put 10-12 summer houses there (electric cooker, water heater, TV, some 2000W lighting heater, etc.) how many kW to count on such a house ??? What to enter the estimated annual consumption, taking into account that they will be used for 4 months ?? / Anyone have any idea, please advice.

At an electric stove, heater and heater ...
Ideally, it would be 13 kW (times the number of houses) - there would be 25 A protection in front of the meter
A minimum of 11 kW - then 20 A.
The connection fee depends on the amount of kW - PLN 166.81 gross / kW
that is: 11 - 1,834.92, 13 - 2,168.54 PLN / house (with a cable connection, a little cheaper overhead)
The indicated amounts apply to a connection length of up to 200 m!
Planned consumption ... do not enter (but approx. 800-100 kWh)