Yea, 50 g contracts are very few. There are some 10-30 g contracts for upcoming pro's that get very lucky. Most get a picture or 2 in a mag promoting the brand and a few hundred bucks of supplements a month that they turn over to their gym buddies for a few extra bucks.
I would do the fitness modeling thing but I don't see the point. How much money can one possibly make? It's really more about vanity than it is salary for most of these guys.
Sounds like your in a good place. Remember, this is Mecca for RECOVERING body building douches.
When Ed/Block say they are into men's physique, part of it is wanting to be healthy and look good, part of it is the body building douche inside that wants to get back to six meals, creatine loading protocols and attention.
In reality you are somewhat correct - the only thing differentiating most of the guys on stage is there face and the pattern on the board shorts. It's a modelling contest. I wouldn't mind looking like a model but there is zero appeal as working or competing as one. That's gay.