im such a city person but..........

from Colorado and congrats on your ambition to be self sufficient.  Hopefully you are reading all you can about the "life" you want, Mother Earth News is really good, there are lots of homesteading sites on line, the county extension agent, etc.  Harvey Ussery has great advice at www.themodernhomestead.us  and of course the best sites around are BYC and sister sites.
The best advice I can offer is to start small,   being self sufficient is time consuming and its easy to get overwhelmed; but very rewarding also.

Also, build your coop before you get your chickens! 

from one city girl turned country girl to another!

You will love it, it just takes some adapting!  But you and your kids will love it!  10 acres, I wish I had 10.

I hear Wyandottes come in all colors and are good for eggs and meat.

Check out Henderson's chicken breed chart, and Feathersite.

Feathersite has so many chicken photos of all different colors.

WARNING:  This is addictive. 

First, welcome!

Second of all, you'll mostlikely want 2 flocks, one of hens for eggs & chicks (I'd suggest a rooster or 2 so you can grow your own egg birds); and a flock of meaties for eating.  You can always get a middle of the road chicken like a rhose island red and do both.  Now then ugly chicken is in the eye of the beholder, but remember white chickens dirty up and are easier for predators to spot.

With 10 acres you could have plenty, depending on time you can put into it.

from FL

from Virginia!  Congratulations and the best of luck on your move to the country life.  The best advice I could give is whatever you chose to take on to begin with, start small.  It isn't as overwhelming and allows for a more gradual merge into the learning curve of it all.  Start with a small flock but research first - do you want white eggs or brown?  Large eggs or small bantam eggs?  What foods does your family eat - tomatoes, cucumbers, green peppers, etc.  While it is all very rewarding and should be wonderful for your children, it is work and if you are like me and take on too much at one time it can fast become more of a chore than a pleasure.  For other great information and wonderful people, use the links on BYC to TheEasyGarden.com, SufficientSelf.com and BackYardHerds.com

Best of Luck and most importantly - HAVE FUN

Ahh yes, another "city person" moving to the country    That's like me just visiting the city    As long as you're willing to adapt to the country, and not having stores and what not with in walking distance, you should be good to go! It's funny because around here, we always say the city folk are moving to the country, and then don't like the smells and everything that goes with it! We live in a very old farming & land conservation community, and those old dutchies can be pretty grumpy... I guess down south you won't have to worry 'bout them though 

I personally would start out small, and grow into your new life style. Gardening can be very tedious, and you don't want to start out so big it overwhelms you. Get a few chickens to begin, possibly some of laying age so you can reap the benefits right from the get go, then if you so desire, you can always add to your flock. Good Luck & keep us posted!

Just know, I moved from being a city girl all my life to a rural community. Its not as rural as I orginally thought... thank goodness, I'm a social butterfly... but I have fallen in love with the ability to do whatever I want, and raise my birds in peace... and let my cat out... and have a larger dog... and spend HOURS in the garden everyday. I'm learning to go more green in our everyday life and its taken over a year to get a good foot hold on it. I still have a LONG ways to go... but I just want to warn you to be patient, it takes time. It took me a couple of months to get used to the quite at night. Not hearing screaming baby mama's and police and fire trucks all night threw me WAY off my usual sleep pattern.