Hey there. "Homing in" is a phrase, but it's not used too often.
1) You're close, but not completely correct! In this sentence, it means "getting close to" (다가가는것 처럼요).
2) In this sentence, the phrase means "focusing on." So it would actually mean (A) "I'm drawing up a report that focuses in on customer preferences" or (B) "I'm drawing up a report that goes into customer preferences." Either version works! A is more formal, and B is more casual/conversational.
Hope this helps!