That sounds a bit high, though I think my family(4 people) can top out at around $1000/month before we factor in restaurants.Jeez food must be pretty cheap in the US. My wife and I and 2 kids(6+9) spend around $1200 a month on food(if not even more).
Food costs me about $100-$150 every three weeks for groceries (this is buying for just me and my roommate) but if I factor in how rarely I cook I'd go with about $300/month and another $100 for meat/fish (but that estimate is possibly high 'cause kosher meat costs more), so $300-$500 is reasonable for food (I know it sounds pretty high, but *shrugs*), but as it'd be cheaper if I shopped in Queens rather than Manhattan, it's really location dependent.
I do this with just about any meat I buy 'cause the family packs are usually cheaper but it's way too much food for two people.. When there is a loss-leader sale on very good cuts of steak, she buys in bulk, repackages and freezes them.
Electricity runs me about a $100/month, internet is $40-50, and heat is included in the rent, otherwise it can be another $100 or $200. Public transport is another biggie, $50-$100 a month on a metrocard, more if I have to factor in rail tickets and the like.