Looks like you’re making some real progress there!
Let me add a bit to the list:
6. The about page is nice but it’s a lot more powerful if you can include a real picture. Remember, you are the thing that differentiates your site from all others in the niche. Once you add the picture, then use the same picture for your Gravatar.
7. Looks like you could use some comments. They will add keywords and phrases to your post but more importantly, they improve your credibility. Start by reaching out to other bloggers in your niche and commenting on their sites. Many of them will return the favor.
8. Two other ways to provide incentives for people to leave comments are the DoFollow and CommentLuv plugins. If you don’t know what they are, feel free to read more about it at my site or elsewhere.
9. Your contact form is broken. I would use the Contact Form 7 plugin for this.
10. Not everyone’s a fan but since you’re using AdSense already, you could quickly monetize your site by simply adding text ads between paragraphs. Since your posts are so long, adding a block of text ads somewhere in the middle might be a good idea.