You gotta whip him with your pitching. Dump Perez and his 1.1 HR/9 rating and pick up the best inverted RH SP you can find, preferably one with a relief rating also.
I won a slugger's division and reached the finals with a Kauffman team which won with pitching and defense, and a couple of key hitters who didn't really fit the park (Abreu and Burrell) because I couldn't find any better. Record wasn't great, but that was due to a slow start. After making a couple of mid-season moves, especially picking up Mike Sweeney (great DH for pitcher's park), things got better.
http://fantasygames.sportingnews.com/baseball/stratomatic/2006/team/team_other.html?user_id=3814