@Star151 just wanted to also say, as someone who lives abroad, that nowhere is perfect and everything has a downside.
Living on an island especially can be very suffocating and usually very expensive. Anything you get on the mainland needs to be further imported. Schools are very expensive and not nearly as good as in a bigger city. Being far away from family gets hard. You will miss birthdays, weddings, barbecues, etc, the small things add up. And you, your kids and your DH are still the same people - any problems you have won't go away but will be magnified.
For us, lifestyle is great in that we have good weather, fabulous healthcare, shorter working hours, a 5 minute commute, a bigger house and a nanny for our young baby (for what nursery costs in the UK).
But we can't go anywhere on a weekend unless we spend £££ on plane tickets. Going to the beach gets old fast. Zero museums or theatres for the odd occasion is frustrating. Bumping into your boss everywhere as it's a small place. Your coworkers are also your friends because there is no one else. Work demands long hours and you have no choice or labour rights- if you don't do well at your job, you have to pack up your family and move countries!!! If you're bullied, harrased or discriminated against you are screwed as you'll be out of a job and stuck in an expensive place where everyone knows each other. Once baby is in primary school, we're looking at 35k per year for a very average school (in reception!!).
So for a short time while kids are babies, island life is better. But you need to consider things very carefully. Not all of the above applies to Jersey but a lot of it will.