Premium Membership includes unlimited live chat and private messaging with Kyle, Carson and any other members within community. You also get access to all phases of the Wealthy Affiliate boot camp, as well as additional templates and tools to build your website. With the Premium Membership, you can choose Wealthy Affiliate as your niche, which has a very rewarding commission structure and additional training.
Before you promote your site, you want to have some substantial content there. Write several product reviews. Have at least two to three in each category you've created. You may also want to create categories for articles, news, and commentary about your topic. The more content your site has, the better. And the great thing is that while you're writing all this, the search engines are getting notified automatically, assuming you turned on the necessary notifications.
So yes, you can be successful. Wealthy Affiliate will help you with every aspect of your content creation, including how to structure content, how to write in a way that converts/ranks, and they even provide you with an awesome writing platform called SiteContent that will speed up the writing process drastically and check all grammar/spelling (along with a lot more).