Honestly, it really depends on you.
For the amount of mazes in one level, it’s hard to say.
Remember, you have to make sure that can play the game.
Even avid gamers don’t have 4770ks (or the best GPU) at times and you have to account for that.
If it were me, I’d do 100 different levels. Just to be safe, and slightly because I’m a level designer (I lied, its only because I’m a level designer!).
But then again it depends. If the mazes are more or less in the same “episode” so-to-speak (DOOM-wise I mean, do the mazes have the same colors, textures, etc…) maybe make 5 mazes per level, 20 mazes per episode?
Just a thought.
Good Luck!
Feel free to ask for help at anytime!
~ Jason