Don't worry too much about 'having' to get a smaller place. Move so you're near a park or some sort of space. Your boys are getting older so they will enjoy the extra space. Plus getting out in public places will help you to interact with others and will assist in preventing isolation which is too easy to do when you are a single parent trying to juggle everythign.
** Purple
As soon as you trust yourself you will know how to live. Goethe