[yummyfajitas]

Day care? The wife either works or she doesn't. In the latter case, day care is unnecessary. In the former case, you've got enough extra money for day care.

As for food, I eat far better than beans and rice, and I probably only spend about $150/month (ignoring restaurants). I'm a 100kg man who eats a lot. $500/month is easily plausible for a family which does not have large teenage children. (This of course assumes a non-working wife to prepare food from scratch, but again, if the wife works, more money to play with.)