Where does 270 dollar come from? Jan call and put difference is not 2.7.You'd have a guaranteed profit of ~$270 (trade) + $129 (div.) = $399
399/2,950 = .135 = 13.5% in ~8 months if margin req. is $2,950.
***Based upon 100 shares +1P and -1C.
***Early exercise is a risk if price increases too much but wouldn't be a factor for some time.