http://www.neilvandyke.org/racket-sicp/
Yes. I used DrRacket with Neil Van Dyke's SICP package http://www.neilvandyke.org/racket-sicp/ , and that's what we recommend.
> What about MIT Scheme in Emacs?
It seemed more complicated to get running, but one of our beta testers is doing it that way, and he's happy with it.
http://www.neilvandyke.org/racket-sicp/