It's hard enough in general but it becomes even harder when you have a family and you have a solopsist, nihilistic type of philosophy.

Obviously you can't accept your children being taught certain things as truth but we're not solely talking "major" things like creation we're talking EVERYTHING... down to the day of the week and less. BUT your children are expected to perform in this manufactured world so what is one to do? Is it a disservice to teach the idiosyncrasies of this world (as I believe it is) to just accept it all but minimize it's relevance or is it better to trash it from the beginning and teach them to only accept it as needed?

Better to get professional help and not have children at this time.

I think it depends whether you mean you have this philosophy, or have this type of personality.
I see this as an important distinction. I can help with the former, but not the latter.