Edit: People say 3 BB/100 is a good deal. So at NL50 you'd have to play about 1000 hands / hour to achieve a reasonable income. Can you do that? Can anyone? I honestly don't know but it doesn't sound too promising.
1k hands in 2 hours or less is possible. I played that on nl25 when elephant didn't crash all the time like now (I think is my DB). (16 tables)
now I only play like 500 hands a session, because of elephant and because I'm lazy ♦ but right now since you are starting in SSS making a lot of money is not as important as improving your game, getting discipline, dealing with downswings and all of that. So don't open 10+ tables before you are comfortable with it.

