Doesn't sound like a lack of support to me - sounds like a group of people who love you!

Now you say you've got everything planned out... truly?
Have you considered the following expenses:
~Healthcare - once you are out of your parent's house and officailly living on your own, you no longer are covered by your parent's insurance plans.
~Basic luxuries like soap, shampoo, laundry powder, fabric softener, cleaning supplies including replenshable things like cleaners and the things that are all up front like mops and buckets and laundry baskets. Don't forget the monhtly quarters for DOING the laundry at the laundromat.
~Food - its much more expensive than you've ever realized when you buy it on your own!
~Emergencies - vet care for the dog, you've got the flu and need medicine, your TV broke... the list goes on.
~cable, phone, car?, insurance for both car and rent
~post, pans, dishes, FURNITURE

Do you have the deposits ready - usually its 3 months of rent.

Is your job steady and steady? Or is it seasonal where one month you make much more than another?

What if oyu decided to take on a roomate... believe me, your mom and dad will feel like the best people in the world compared to the roomate from heck.