I think that is really high...150 per week,plus 100 for toiletries and paper,plus eating out/fun money....yikes!

our family of 4 (big guys) budget is usually 75.00-100.00 per week for food,includes pet food,tp,paper towels,etc etc. I don't feel like we miss out on a lot of stuff, but I tend to make a lot of food from scratch,that makes a difference, and we mostly buy store brands....I don't coupon, but I like discount groceries like Aldi,PriceRite,BigLots,etc. I watch for sales, and buy what's a good price.

example, my family LOVES hummus,last week at Pricerite the Sabra brand (their fave) went on sale from 3.00+ down to 1.49.

I bought 12 of those babies. stacked in the fridge with store brand corn chips and carrots in a jar is all the snacking they want for a couple of weeks(if they last that long,not kidding) When something you love/use a lot goes cheap,buy a LOT and store accordingly.
I also keep that budget separate from our eating out/etc. budget...