Question Concerning Yearly Profit???

I was trying to crunch some numbers, but I would like to see what everyone thought about it. I was trying to figure how much a good 5-10 NL player could make in a year providing he two or 3 tables them and plays 5-6 hours a day. I was thinking if he could make anywhere from 3BB-5BB an hour, he could be staring at over 100k-150k. Is this realistic or is there something I'm missing...Thanks in advance