I did a week of MICU there, and the most memorable cases I had were a 50-something year old man who was clearly schizophrenic (but psych didn't come to see him the whole time I was there, and no psych meds) and kept pulling the ETT out. You'll have to excuse me if I forget his Dx; I spent most of my time trying to keep his O2 sats up while simultaneously keeping him from hitting me.
The other was a woman with C dif and COPD. She was very sweet, but very stinky
A large majority of the patients at Grady are indigent, and you can tell. I don't mean to sound mean or snotty, but they need a LOT of teaching and resources. What I really liked about their ICU was that you only have 2 patients, but it is total care; no techs. The paperwork isn't too bad either.
I don't see 1 year med/surg being a barrier to you getting in there. The main thing is to make yourself known. Most people who work there are paying their dues so they can go do what they really want, and I don't blame them. The experience is like a gold star on your resume.