uh man... guys... be nice... i've been there before, and i'm sure many of us have wondered about the same thing during our third year.
I think your step I will hurt you. I would take step II early and ace it. If you bomb that one too, there is an option not to automatically submit, so I would do that. If you really didn't study for step I (why?) and that's why you didn't do so well, then I would study, study and study like never before and ace that sucker. It's very doable. Step II is ALL clinical with minimal basic/genetic stuff. If you are getting all honors in your 3rd year, step II should be much easier for you.
My basic response to your questions:
1. poor step 1 -> take step II (i'm talking 240+).
2. school name -> although many people talk about prestigious med school not making a difference, I would strongly disagree. Not just in ortho, but in everything else. I know many people who matched at Harvard, UPenn, Columbia, UCSF, HSS and huge majority are from top ranked med school (or have awesome home ortho program). Studentdoctor.net forum has match list going, and it's very obvious that top medical school secure top academic residency positions (Johns Hopkins would be one of them). So you are already at a disadvantage. Because of this, I would do 1 home, and 2 aways. 1 competitive school and 1 back-up. Not knowing details, Johns Hopkins is a steep hill to climb for you.
3. Research -> what you have is good, but will not distinguish you from others. I would highly consider taking 1 year off to get as many publications out as possible (also a good time to ace step II). Taking a year off is much better than taking a year off because you didn't match.
Final answer: I think you can make it, but you really have to apply widely and hope for the best. There are people who matched at top ortho programs with your step I score, but it's not a common story.