Great effort. I'd recommend you to go to the student apartment complexes. There you'll find plenty of young, affluent and Internet savvy people and the big plus is that there are many, many mail boxes in one spot.
Also: Use flyers have the size. That's enough and you get twice as many out for the same price.
Thanks a lot man for your advice I2m planning to create another thing with flyers and more talking involved in the future