Moving from Wagga...Tumba, Tumut or Batlow?

What would be the better town to move to from a larger town (Wagga)? I am a single parent, with 2 kids (5 and 7) and my youngest has a disability and starting kindy in 2012. So Im looking at mainly schools, and also grocery shopping options. I have a lawn mowing business so work isnt all that important. Just looking for cheaper living compaired to Wagga :)