Okay, going to sound harsh, but here's what I'd suggest. Don't do it!!!! You're only a month out, have done absolutely no research, don't know the parks, have no FPs booked, no ADRs, and you're going at the absolute busiest time of the year. Just sounds like a recipe for disaster to me! You don't want your first visit to be a bad one. Disney is overwhelming--even to veterans sometimes. There's a lot of planning and research to do to really make it a wonderful trip.
Could you plan for another time--next spring or summer or even a year from now at Christmas? I just really feel you may be setting you and your family up for failure by trying to do a last minute trip without really knowing much about Disney at all. You probably won't get to eat at the restaurants you want, may not get to ride many rides without waiting hours in line.
Take a breath, do some research, plan ahead--Disney will still be there and you'll have a great trip!