DL Trouble -- Any Thoughts?

[Jaqen]

hello, new guy here. after a slow start the first two weeks I'm currently on my way to a fifth straight victory in my 10 team H2H matchup league. I'm getting to a point where my team is plagued with injuries, so I've had to devise a strategy to deal with the coming 3-4 weeks. our league was set up in a hurry so we've got a few extra positional slots and a staff of 9 pitchers, with no SP/RP requirements. right now my team looks like this:

C - Buster Posey
1B - Adrian Gonzalez
2B - Jose Altuve
3B - David Freese
SS - Troy Tulowitzki
2B/SS - Dustin Ackley
1B/3B - Hanley Ramirez
OF - Matt Holliday
OF - Michael Bourn
OF - Mike Trout
OF - Bryce Harper
OF - Yonder Alonso
UT - Andy Dirks
BE - Michael Morse (DL)
BE - Pablo Sandoval (DL)
BE - Austin Jackson (DL)
DL - Emilio Bonifacio

SP - Clayton Kershaw
SP - Zack Greinke
SP - Jeremy Hellickson
SP - Yu Darvish
SP - Lance Lynn
SP - R.A. Dickey
RP - Craig Kimbrel
RP - John Axford
RP - Ryan Cook (good source of holds)

I'm considering dropping Ackley for Chase Utley once he's healthy. and when my currently disabled players are back in the lineup, I was planning on dropping Alonso or Dirks, and putting Harper and Altuve on the bench (provided that I can pick up Utley when he's ready to return to play). any thoughts or suggestions?

thanks,
Jaqen