Austin Millinder

So i'm lighting an ext. night scene soon and it takes place under a street lamp. Does anyone have any suggestions on how to light this? The lamp will be on, and I only have 3 lights. im thinking about using a high (aiming down) soft CTB light as moon effect, then another, slightly harder, high (aiming down) CTO light to add to the street lamp. i'm also considering adding a low (aiming up) soft white light as a back light. The camera we're shooting on is a DVX 100b. any suggestions?