Fanasty baseball help?

kyle blanks for the padres is supposed to have a good year 20 to 25 homeruns i wanna pick him up but i dont know who to drop.... i have posada, tex, phillips, beckham,andrus, justion upton, either, heyward, butler, on the bench carlos gonzalez and placido planco than Lester, Wainwright, Cain, Garza, Buchloz, Wagner, Hoffman, and Mar on the bench... webb on the dl i dont think i can drop one of my pitchers but idk who to drop i like planco casue he can play 2b n will soon be able to play 3b