I'd say you've read quite a bit, and absorbed it very well...nice site
I'd list that one in a hot second
To your question about the 'bonus gallery'. Don't really think it can hurt anything...does offer the surfer an option. Though that option may take away a bit from your primary sponsor. Opinions vary on pushing 2 sponsors in the same niche on the same free site. The whole 'how can site A be sooo good if you're offering me site B too?' train of thought.
Personally, when I want to add a 2nd sponsor to a free site...I'll make it something completely different. Something to perhaps shock the surfer into being curious about that 2nd sponsor site. Just a bit of food for thought
Again though...very nicely done on the site!