Awesome idea, should be very successful. However, if you didn't notice the slight problem I will point it out to you. The way you want to do this is going to make it so you can make only $800 a month? Many people here are making 20k a day from adsense alone.
One of the BIGGEST mistakes with websites is that they don't monetize it like they should. You could make way more. Ask any major website owner, if you get 10,000 TARGETED visitors a month and only making $800 then you are not getting all that you can for it. (Keep in mind the work involved with the flyers, ranking site, ext...)
Why don't you put some PPM ads up, just one or two on each page should be sufficient. This isn't all you can do though, sell the emails, names, ext... on top of it. Depending on how well you do this, you could make a lot more money.
When you are doing the "Give Away's" you should send them to multiple pages, increasing the PPM views.
Even if you do a crappy job with these methods, it is still extra money to keep you going. $0.67 a week vs $0.00 a week, $35 a year is better than nothing
I could expand on this for hours on end. These are just ideas, mix them up to make them unique, add some more ideas, ext... Hope this helps