Could you please post a photo of yourself? (no face, obviously)
I'm imagining that you look like a cyclist, but I could be wrong...
Either way, I don't see the point in using AAS if it's just to gain a bit of leg mass. But to each their own.
PS: bear in mind that while guys with disproportionately large upper bodies may look funny, ones with big legs (that aren't well defined) and weak upper bodies tend to look like hobbits (Samwise would be the prototype, here).