Announcing?

Megan • 24, have a 6 year old girl and an amazing boyfriend! Expecting #2 November of 2015!!
My boyfriend and I are very excited to announce our new baby, my daughter is very excited to be a big sister! A small part of my family isn't going to be happy..including my father, since I haven't finished college..I'm not sure how to go about this..his whole family is going to be happy! Any ideas on how to go about telling out news?