A Hypothetical Backstory for Snoke

First off, let me start by saying that I'm not one of those fans that are particularly angry about the lack of Snoke's backstory. That being said...I had this silly idea about where he may have come from.

Take away the gold frock and put him in some basic Star Wars-y attire. Commoner garments.
Plain robes, cloth wrappings, peasant kimonos, etc. Now take away his grandiose personality and imagine this guy named Mr. Snoke: a fragile-looking, soft-spoken, scarred and crippled old man.

I imagined Snoke to be this unassuming old guy who somehow infiltrated Luke's new Jedi temple. Using the dark side to "cloud everything," I picture Snoke posing as an undercover janitor. Mopping floors, dusting statues, cleaning lightsabers, etc. He's been biding his time since the fall of the Empire. His powers growing. His ability to hide in plain site.

Snoke seduced Ben Solo to the dark side, all under Luke's nose. Snoke had also been influencing the "handful of other students" as well, grooming Ben to be their leader. Hence the Knights of Ren (for which I assume will be brought up in episode 9?).

I dunno. It just made sense to me that Snoke would have to have been keeping a very low profile during the rule of Palpatine, probably knowing he had no chance at overthrowing him during the Empire's heyday. Since the Empire fell, this was Snoke's moment. But he was patient and sneakily infiltrated Luke's circle of trust.

Maybe Luke and Snoke had been on friendly terms, and Snoke used that trust to erode the new generation of Jedi from within? Just another reason for Luke to feel like a failure.

Just thinking out loud.