i'm used to street photography n now im trying to embark on indoor strobist kind of potraits. actually i was thinking to capture indoor group photo in a normal HDB, say a family of 3-4 pax. i understand there are wide variety of ways to do up the lightings. but is there most effecient and low cost lighting setup (i need to rent coz i dun own any lighitngs, just a sb 700) that can achieve great results? for instance, a one lighting system? strobes or speedlights? i hope those experienced strobist out there could enlighten me on this situation.