Keywords identified....how does my competition look?

Hi guys, I've been a member here for a while now and without asking questions I have managed to make some (small amount) of money by promoting physical products, namely on Amazon.

Upon doing some keyword research I have found a product that I would like to promote and the keyword 'Product Name Reviews' gets 12,100 exacts per month (local US) and 18,100 global.

Now when doing my competition research I can see that;

1 - #1 on Google has just 4 backilinks pointing to this page and they are not high PR/Authority. It also has a PR of 2.

2 - #2 has just 2 backlinks pointing to this site and they are not high PR/Authority, and no PR

3 - #6 - I can see this is another affiliate marketer competing for this keyword (I can tell as he has used a modifier at the end of the keywords in his URL and the site screams IM'er). This site has 135 backlinks, again not high PR and it looks like they are all from autoblogs, like the type Unique Article Wizard submits too to create contextual backlinks.

Also this is the only site in the top 10 where the root domain is returned by google for this search term. I.e all other 9 results are to internal pages with content on this product. This page also has no PR.

4 - There are 2 results returned (amazon & youtube) for this keyword which have pagerank. All other with the exception of #1 have n/a pagerank.

My thoughts are that I should tackle this niche, and by providing real quality and helpful content, along with high PR backlinks (over time) I should be able to rank well for this highly search for keyword....

What do you guys think? Hope you can help.

Thanks in advance