Pick the best hitters (and that includes Murton) and keep them for the team. There's no reason that you can't go with 2 OFers and 1 IF on the bench to start the season. If there's a little injury to an IF and you're worried about them missing a few games but not going on the DL, send Hart or Murton down and bring up Fontenot or whoever. I think getting tied down into having so many IF and so many OF on the bench is silly (and I've long advocated using 6 bullpen spots and yo-yoing 2-3 pitchers between the Cubs and AAA). Moreover, though he's not brilliant defensively or anything, it's not like Soriano can't or won't play 2B if it's needed. If, say, Ramirez and Theriot go down in a game, you move DeRosa to 3B, Cedeno to SS, Soriano to 2B and Murton to LF. Big whoop. Cedeno, Theriot and DeRosa are (in a pinch) interchangeable among 3B, SS, and 2B and Soriano is your emergency 2B. Sure, you won't want to do that everyday, but for part of one game? It's fine.