Thanks, guys. For the record, I'm at an allopathic American medical school.
I also do not agree that a FMG is unlikely to become an IR if they so desire. They'd probably get in somewhere with a Step 1 of 255...All they would have to do is get into a respectable mid-tier DR program and apply for fellowship.
As of right now, I'm trying to get letters in place and all of that jazz. I've got one great letter from a year in pathology I did between MS2 and 3. I'm planning on doing a month of general radiology at home, followed by a month away. I was then going to do a month of ID (because our faculty is awesome, and I feel that it would be a great way to prep for CS) with CS in the middle of it. Then, I was going to do our required (non-graded) medicine sub-I. That would be followed by a month off in late October to mid November for dedicated study time for CK, and interviews.
My worry was when looking at FREIDA. Quite a few programs have numbers listed for both Step 1 and 2 in the general section of, "USMLE Step 1 and Step 2 requirements for interview consideration." I just don't want to be the idiot that didn't get interviews because he didn't take Step 2 early enough.
Basically, I have other things that I would really like to tackle and finish early in MS4 during my "down time" (rads electives, letters, my research project), but if I have to take Step 2, I'm sure I could pass pretty comfortably with studying during that time instead of doing the above. However, given my Step 1, I feel that I need to score at LEAST 260.