Believe it or not, I offered to come speak to the second years about third and fourth year. They declined. Thought they knew it all. I'm sure they'll be asking in a year, so remember all the pearls you get. 🙂
I scheduled away rotations in a central location where I was applying. Since I was concentrating in ohio, Michigan, and WV I did aways in Ohio at hospitals (not necessarily programs) I was also applying to. Saved a BUNCH on travel and time off. So, fourth year scheduling. I hope you have your level 2 scheduled, as well as your PE. I was asked if I had taken and passed at every interview. Gave me a big leg up.
rotations to take. EM is good - you can usually arrange your days off. Light rotations are generally suggested such as radiology, alt med, etc. I did cardiology, EM, and plastic surgery. All my attendings were absolutely understanding of the interview situation and wished me luck - some even offered to call the programs or write me another LOR if I thought it would help at all. I did try not to take off more than a day or two a rotation and also tried to schedule interviews not in the middle of the week if possible. Also tried to schedule interviews together if they were closeby. I had two interviews 40 miles away from each other back to back. A little tiring, but good for the schedule. As long as you work hard at your rotations during the time you're there, don't blow them off, stay the extra time if necessary, and offer to move days off, you shouldn't have a problem.
What are you applying for? And are you doing AOA or ACGME (which will definitely change your interview season by a month each side)?