This is a classic case of why the auction is so attractive. How can you truly overcome picking 16th in a league when you have absolutely no chance of getting a true stud back? Not only do the top 3 owners get an LJ, Alexander, or Tomlinson, but they will likely get a chance to grab a top wideout because those at the bottom of the draft were forced to gamble on a questionable back.
In my opinion, you use one of those picks on a back...perhaps you could get a Chester Taylor there in hopes that he breaks out, then use the second pick on the best available player. I think taking two backs secures the fact that you are at a disadvantage at RB, without picking up an advantage at another position. In reality, the odds of getting a good back at pick 24 are as good as getting one at pick 16 or 17, assuming that the first round is dominated by the backs as usual. Just my 2 cents.