Potentially Huge Keyword

I know that high quality content is the most important thing when you're trying to establish a site these days, and I found a keyword that might potentially be huge for affiliate sales in the next month (trending spike). The problem is that I don't know anything about my niche; I could build a site from the ground up using what I find online from my competition, but my site won't bring anything unique to the table.

Do you think it's better to just dive in and see what I can make from the process (this would be my first major campaign) or should I do more research and find another keyword/niche I can actually relate to and write about?

I say dive in and use it as a learning experience. Sometimes you can surprise yourself when you're just testing the waters.