The housing market is very difficult here. I'm not sure if your intention is to buy a property, or rent in the short term, but housing is in very short supply. So houses often sell for considerably more than the asking price. And rents are astronomical.
If money is no object, then I would look along the coastal areas of Dublin. There are some lovely seaside villages in Dublin. Is your husband's job in the city centre? If so, I would look for somewhere along the Dart line, so he could take the Dart to work. Traffic is horrendous in Dublin, especially at peak times. daft.ie is the best website for searching for homes (buying or renting).
It's very difficult to say exactly how much you would need to earn to live comfortably, because your biggest cost is likely to be your mortgage or your rent. Income tax (PAYE) for single people is charged at 20% up to €44k and 40% on anything you earn above €44k. We also pay PRSI (4% of income). Cost of living surveys rate us very high compared to the rest of Europe.
We don't pay Council tax here, but we pay a property tax and we pay waste charges (private firms run the waste collection services).
You will have to factor in healthcare costs. We don't have free healthcare here. So, either you pay as you go, or you take out a health insurance policy to cover you and your family. A visit to a GP costs approx. €60 (I think I might have paid slightly more last time I went). You have to pay for all prescriptions up to a max. of €80 per family per month. If you turn up at A&E without a GP referral, you will be charged €100. You can claim back a small % of these costs from Revenue.
Our school system consists of primary school and then secondary school. Most children start school at the age of 5 (approx.). They spend eight years in primary school and then five or six years in secondary school. Most children finish school at the age of 18 or 19.
We have state exams in our third year of secondary school (the Junior Certificate) and in our final year of secondary school (the Leaving Certificate). Entry to university is mostly determined by the points you achieve in your Leaving Certificate (the "points race"). Gaeilge (the Irish language) is a compulsory subject up to Leaving Certificate level.
If you have a scroll through this board, you will come across lots of threads about moving to Ireland. They might help you to decide.