That’s kind of like not being 100% pregnant.
Either you have a green card in process, or you’re part of the lottery with no greater odds than anyone else.
And the question about your family moving to the US is a good one-- do they have plans? Or are you going to pick up, land at JFK in New York, and take a cab to midtown to start looking for a hotel?
It seems to me that maybe this needs to be thought out a bit better.