Google knows that, so eventually the position of the post depends on the keywords on the title and many other parameters, of course. But do not stuff your title with keywords. Here are some tools for keyword research..
Though there are ways to completely shift your blogger blog to wordpress and automatically redirect visitors to the new domain, I would say that you keep the old blogger blog intact and consider the new blog as a continuation of the old one. Why?
Just for a comparison (in case you are a google employee), wordpress has a comment box right below the post. Once someone comments on a wordpress, it saves your information as cookies and fetches that when he returns the next time
If you belong to any of the above, you are someone who should be a blogger. Blogging is the best way the world can know you better and you can know others better. Money is just a by product. Doing what you love is not working, so if you are blogging about something that you are passionate about, you won’t feel the effort. And the real world responses will keep you writing.