I'm not sure how much you have $$$-wise set aside for marketing, but this time of year a banner on
www.mlbtraderumors.com could be worth its weight in gold.
The site started as a one-man blog about two years ago. The lead guy has since quit his "real-world" job and hired others because the site has really taken off. I would guess that the site draws those that fall into the right-hand side of your baseball spectrum.
Good luck!