Looks like the folks on Sailnet are ready to help... We could help you determine a realistic budget for your adventure and guide you in a general direction.
Some further information from you would be helpful:
1) Where are you planning on sailing?
2) How old are your children?
3) What are your repair/maintenance skills? (Electrical, Engines, General Mechanical)
4) What is your approximate budget?
1987 CS 36 Merlin "Kyrie"
"They drove a dump truck full of money up to my house. I'm not made of stone!" -Krusty the Clown