Moving with family to Helsinki from the U.K.

Hello- my partner (eu citizen) works for a Finnish company and we have the opportunity to move to Helsinki. He currently works from home and work are okay with that so the move doesn't have to be mandatory but we feel like we should take this opportunity and move there!
We have two daughters - age 5 and age 1 and I wouldn't have a job when I move - (f35) degree but only Duolingo understanding of Finnish. 🤪
Are we bonkers or is this a good opportunity for us as a family?
Everything in the u.k is very grim at the moment ( bills increasing, brexit and general petty crime) and is probably a driving force for us to move - I have always been interested in Finnish culture and really liked Helsinki when we we have visited! Just a bit of perspective would be nice as if it was just us as a couple I think we would go but having children and a mortgage makes me second guess everything!