Thanks for the encouragement. I've always been interested in EM, but the shiftwork in EM seems really convenient to maintaining a lab and doing research.
I'm curious; you chose to be primarily affiliated with Immunology rather than EM? I don't know how tough it is to get faculty positions in EM nowadays, but the basic science spots seem even tougher, since you are competing with a lot of PhDs. Did you consider getting into academics the other way around?
One other thing. If you choose your residency right (ie., departmental support and the right collaborators), do you think it might be possible to find a mentor and do enough preliminary data to apply for a K08 coming out of residency? I wouldn't mind doing a fellowship year, either, but it'd be nice to keep a hand (or finger) in research while I'm doing clinical work.