I do the family history in my family and love what you are thinking of doing. Go for it! Share with your children. Thank everyone in the family who helps you retrieve information.
I have been trying to trace my deceased husband's family for over 50 years. Can't get to first base!! It is so frustrating as I have offered and offered to pay big bucks to share information. Get nothing. Right now I don't even know the exact birth and death dates of his parents nor even the exact name of the grandparents.
This is a good thing you want to do. Good luck!