Not sure about 'unreachable'. It sounds like you are a solid candidate with good grades, a reasonable Step1, and better-than-many research. Now, it really depends on what you want in a program and career. If your research work has been out of passion and you are interested in an academic career, then a one-month rotation at a place like WashU in St Louis (though recent losses in spine/shoulder), Iowa (plenty of success recently and aways of producing field leaders),, University of Washington (some years are half women, had a recent resident woman researcher of the year) is a good idea.
An away rotation can take you from a borderline interview to a pursued candidate - if you are a dependable, hard-working, good to be around person. If your research was out of a desire to get into residency, and what you fear most is rotating somewhere and not getting an interview there, you should make different choices. I don't think an away with no interview is really a waste... you still learn a lot, and if a place doesn't want to interview you they are just showing you the respect of letting you know that they don't think you are a good fit for their program.
As an aside - If you only do aways at places that interview all their away rotators, you don't know whether they are interviewing you out of legitimate interest or because they interview all their away rotators.
I'd suggest doing away rotations at places you really think you might want to spend five years of your life - either a place your partner will also be happy (or a place from which you'd like to find your partner), friends/family aren't far, etc. If you want to pick at least one place that is 'safe' I really don't think there are any safe orthopaedic programs. Every away rotation is a 24 hour, 7 day a week, month-long exhausting interview - or if it isn't, probably you are doing something wrong.
Anyway, random thoughts from someone who finished residency just a bit ago. Congrats on your successes to date, and good luck!