I know this may sound stupid...but with the money just stop doing so much that costs money. Many have said before that you need to slow down with the girls. During the winter and fall find things to do that don't cost money or are cheaper. Now once you rent the house that will help a lot. If there are trees, spend the day jumping in piles of leaves, carve pumpkins (or decorate pumpkins) then make roasted pumpkin seeds and maybe try to make pumpkin cookies (which are great), go to the library. Instead of going to the theater to see the newest movie, rent a classic or a newer one from the video store or better yet, redbox ($1), then make popcorn yourself and buy a few other fun treats you would eat at the movie. A movie night at home would probably be half the cost of going to the theater. Go sledding, make a snowman, get in touch with your feminine side and maybe try to help the girls decorate different items like a purse (can find some at Goodwill then dress it up).
There really is so much you can do with your girls that won't cost any money or very little to help you save money. You are a great dad and you don't have to do "big" things all the time. I know my best memories of childhood were not the trips to Disney or going other places. It was the things we did everyday. The new traditions that were made. The inside jokes that happened.
Just a thought.
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