I can create a great looking site for you and also pick out a great product to promote. But I would encourage you, whether you accept my bid, or another one, to do your own product/niche research. It's not easy! But you'll have no way to evaluate the quality of your deliverable without doing it. Also, anybody that tells you how they can get you traffic without first having picked the niche...isn't being honest. Traffic is people, niches are things that people like, therefore you have to understand your customer, their problem (that your product will solve) and where they "hangout" on the web. This can vary wildly based on the niche.
Another thing to bear in mind, traffic takes time. Honest traffic, like you want, takes time to build. SEO starts with a well-design site that loads fast (I can do that), and great content that answers your customer questions/searches (a body of great content should be built over time). Ads, can be appropriate for many niches. The Bing network is much more affordable than Google and worth consideration (my bid doesn't include an advertising budget, but does include campaign). The very management). The very best traffic comes from engaging with your customers where they are on the web...social media, forums (very niche-specific).
Please let me know if you have any questions. I'd be happy to discuss the project with you.