The elf is Japanese, young, and on the tall side, even for an elf. The fit of his pants tells Stake that he buys off the rack, though he also probably buys new. The thing Stake really knows is the augmenations. The guy's had his ears done, which is probably a great benefit in a place like this. Hell, he could even be listening to Faust while the DJ inside is blaring all that other stuff. Even in the dark as he approaches, Stake can tell the ears were purchased used. Still, it's not he most common thing to have done, so he could be a collector, which would point toward higher earner. The demeanor says, "Approach with caution, and don't fuck up," which is, of course, the demeanor he's paid to put off.
Stake would know that coming into the club in full armor is one thing. This is the Barrens, even if it's also Touristville, but trying to get an assault rifle through the door is something else entirely. These could be his friends inside, or people he hates, but even if it's the latter about the only way he'd be willing to play ball is with some guarantee that it never came back on him. Without that caveat being met you're probably looking at no-dice unless you're willing to throw the kind of money at the guy that's going to let him set up a new life for himself in Winnipeg.
Unless Stake is supposed to be there with that assault rifle.
Anyway, you had a pretty solid roll with your Perception Test, so if I missed something specific that you'd like to know, ask away.