Hello Kristin,
Have you looked at the Portugal section of this forum?

Which part of Portugal would you like to move to, any preference?

As your children are still relatively young...will they attend international school or would you wish them to attend local Portuguese schools and integrate into the community?

My children have all grown up so have no experience of this personally, but I am in contact with people in various areas.. Expats and Portuguese who have children of similar ages, who may be willing to give you info. Just need a little more as to regards to location. Cannot promise anything but I will at least send them your contact details
keep in touch