Is the absurd rake beatable at my local casino's 1-2 NL?

[A_C_Slater]

The rake is a half hour time charge of $6. So it's $12 an hour to play 1-2 NL (plus $1 raked for the bad beat jackpot and $1 tip if I win a big pot.)

The games are usually full of ace wonders and maybe 1 or 2 old rocks. I made $350 in my first outing after six hours of play and my second visit I dropped $150 in about four hours.

I figure that due to the rake I have to win $14 an hour just to break even. The blinds are 1-2 and with a half hour time charge that means I have to win the blinds twice in half an hour. Half hour of casino poker = about 20 hands (with shuffler machines.)

So on an average I have to win the blinds twice in 20 hands or once in ten hands.

Is this possible to beat long term despite the abysmal play of my opponents? By abysmal, I mean someone open raising under the gun to $20 and getting four cold callers, people calling off their whole stack to a huge overbet at the pot with OESD and non nut flush draws.

What is a typical NL expectation in terms of BB/100?

I have been strictly a limit player for over a year and so I do not know the answer to this basic fundamental question.

Any help regarding this matter would be greatly appreciated.