What is up with this notion that you have to be a certain weight before starting an AAS cycle. I'm so sick of this "myth" that is always pushed around.
At 5'7" 180lbs at 10% BF, that is a SOLID base to start off from. Not everyone who uses AAS are looking to just pack on muscle and weight. A lot of guys are just looking to get stronger (strength), faster (speed), and increase overall well-being (stamina, endurance, mood).
I myself am about 6'2" and never want to be over 220lbs, actually 205lbs; and even that is on the high side. I've yet to ever run a cycle, however, I am an avid sports junkie. My ideal goal is to be a lean and shredded 190lbs, with a 32" waist or less, and try to maintain sub 10% levels all year round. That would be IDEAL for me. Just because I want to be under 200lbs does that mean I should NEVER touch AAS? That's such complete BS. AAS don't just offer weight and size, they offer a lot more for athletes looking for goals other than looking like the Hulk.
Now a lot of AAS just can't be ran for athletes because they decrease cardio. However, a simple test cycle is highly favored to the athlete. Couple it with a dry compound and they can do some damage. The wet ones are usually best to run off-season while dry ones are better suited during the on-season. And of course, all this is dependent on how frequently they can expect a test, if they are suspect to it in their organization.
Do you know how many MMA fighters run cycles? A lot of them are in the weight classes under 200, what do you have to say about this? AAS help guys with strength, which is not ALWAYS correlated with mass gains. An increase in strength does not always increase your weight, it is independent of it. They also help with speed and agility, given you train for it. They help to increase drive and aggression, which will further aid you to increase strength and get you locked in.
OP, this is the one common tale that you don't have to listen to or take into consideration. Lance Armstrong used PEDs. Does he look like Phil Heath? No, because that wasn't his goal.
Stop this "get your weight up naturally before using AAS" crap. There's nothing wrong with wanting to stay under 200lbs and using AAS to get there.