Okay okay, I never thought this day would come, but I can finally use my giggalo experience to help someone on Veeky Forums. What a day to be alive.
Now usually I just use my chad looks to fuck desperate and fat chicks. but more than once I was solicited by gay men to perform my services at gay outings and what-not. I'm not gay in any form, so no fucking or anything, but I did do gay gigs. From my experience, you have to be real careful, your body type is EVERYTHING to gay men. Your entire personality is defined by your looks which will be front row and center in a strip club, so depending on that alone will define how they interact with you.
You mentioned your bigger and better than pic related, which is [spoiler]very good.[/spoiler]
You'll probably be classified as ruski, which in the gay circles is a derivative of bear, usually attributed to men without the hair and more definition. Imagine a russian bodybuilder or strong man, that dealio. Keep in mind you might not think your anywhere near that standard, but most gay men are twinks, don't let porn fool you, they are rarely built.
So, with all this in mind, what is my advice? Take the job, ohh yeah, that it asap. While your performing, never fully smile, give off cocky smirks and frown when flexing. Be the big, strong, capable and unstoppable mass of muscle that will carry 10 men on your arms. Be gaston basically, and there wont be a single gay man out there who will fuck with you. Build your whole shtick and stage persona on being the guy you don't fuck with. Look... But no touch. That kinda shit, you'll have regular nu-male twinks lining up for miles for you just to WINK at them.
Good luck op, its a good world if you keep your head on straight, and know your own boundaries.
As foe the drugs and shit, just decline. If your a good piece of ass most places wont throw you out. But make no mistake, they WILL try and hook you in. DON'T take extras, and DON'T do bonus'. They're only there to snag you.