I think that sounds like an awesome opportunity, and one that you cannot pass up. I think it is sad that your family and friends are stressing you out about money, sometimes we have to jump out on a limb. It is a little harder to take those chances when you have children, but with one, it isn't too bad. I think you should go for it. If we listened to friends, family, or peer pressure for everything, we would never get anything done.
Also, if you feel comfortable, I would mention to some of them that the things they said hurt you. You will be just fine, and whether they believe it or not, they should give you encouragement and love.