The "all in guys" are naive.
I'm not sure anyone is actually disagreeing in this thread. Is anyone suggesting that we take no other running backs this year besides LF? If so, I haven't seen it. Everyone agrees that we need at least two and probably three RBs in this class, since we didn't take one last year (unless Brazil is one). So no one is suggesting that we take LF's commitment and no other RBs.
What seems to be the issue in this thread is the psychological attitude that we, as fans, should have regarding LF's recruitment. Should we prepare for possible disappointment so that we aren't emotionally crushed in the event that LF chooses another school? That way, we can be truly overjoyed when LF commits, since we weren't expecting it. Or should we go "all in" and allow the confidence of a future LF commitment to permeate our consciousness so that we can actually enjoy the excellent year that 2014 is shaping up to be (without worrying all the time)?
It's ultimately a matter of personal choice, rather than a matter of meaningful argument. Personally, if there a neutral ground between the Debbie Downers and the Sunshine Pumpers, then that's where I want to be.