away rotation thru mid-December too late?

We had a "lottery" for our senior year classes - 3 which are required for me - and I ended up getting screwed with having two of them scheduled in the first half of my 4th year. I'm planning on doing an ortho sub-I first block at home and then taking a month off for Step 2 since I have some room for improvement before I do aways. However with these other two classes it puts me in a situtaiton where I'd end up doing one of my away rotations through mid-december. Is that too late?? I figured I'd be able to schedule interviews after that. Also I'm just wondering if any programs I'm interviewing at will wonder why I don't have a LOR from that program I rotate at then because it might take a little while to have it written and sent to my school to be uploaded to ERAS. Anyone successfully do an away through mid-Dec and successfully get a LOR and have time for interviews?