FA is more than enough for micro. CMMRS is excessive.
M4 here (who did well on Step1, which is a question you should ask any upperclassman who tries to give you advice!)
I disagree. I have no experience with CMMRS, but FA is not enough for micro (unless you have a strong background in micro/ID). This is a high yield subject, and if the OP is not strong in it, he/she should definitely get a review book which explains the material/concepts in detail (instead of having random tables of disorganized trivia, which is what my opinion of FA is).
regarding the point on commenting on one's step 1 performance, I think that it is more important for every poster to indicate how versed in the topic (in this case, micro) they were prior to their step 1 prep. someone who aced micro in MS2 is less likely to require (and thus recommend) extra resources, when compared to the average Joe.
leading by example: I had a solid grasp of micro during MS2, but still chose to read Kaplan micro as my main resource for this subject.