As a senior JFK F/O I did 4 day turns in a row worth 29:10. 3 of those and I was done for the month. 12 days of work. I hate working so I didn't pick anything else up but I could have. I you wanted to work and extra 2 or 3 days and were able to pick up a deadhead or international turn and that amount seems plausible. Work to live, not the other way around.