full body shot help with two speedlites/reflector/softbo​x

hi,

ill be doing some full body shots for a fashion blog for fun. i didnt have time to get a larger softbox or umbrella. i have a 24inch cheetah softbox, canon 600exrt and yongnuo 560 i could use as optical slave along with yongnuo triggers. also have a reflector. any recommendations on setup? will be against a dark grey/blackish matte background. i was thinking just putting the softbox as high key in front leftish and reflector on the floor to bounce some light back up, hopefully not getting too much falloff. any way to use the second speedlite or better setup? dont have a second modifier unfort and bh closed for holidays. planning to go 35mm as lens

tia

How about getting 4 sheets of 20x30 white foamcore, tape them together and bounce the speedlites off that instead? That'd give you a lot better coverage than your relatively small softbox will for a full body. It would be like bouncing off a small portable wall. You could even get 6 sheets or more and use some of them on the floor and/or opposite sides for fill.