Mayobuild

We are building a timber frame house and a naturally warm people, everyone we talk to says we’ll be roasted and any new house we’ve been in we’ve commented on how we would manage with the heat. We have the option to go passive with the timber frame, theres a difference of €6k between the standard package (U value 0.18) and the passive at 0.13 U value. Would it be an option to go with the passive and go for electric heaters. Greater control over the running of the heating and if it is as warm as people say they won’t be used as much. Electric underfloor element for the bathrooms. We’ll have a solar PV installed, adding batteries could help manage the load better. Is this a viable option or has anyone done anything similar? As a follow on, what would be the best way to solve our hot water demand? Thanks