Yes your strategy is correct. Your risks are basically what Rmorse mentioned. How much over fair value do you "give up" when entering the position. To minimize this enter the trade as a spread. Slowly change the price until you are filled. If you have to give up too much edge, don't do it.
Also you don't want to be in a position where you need to exercise your long call to capture the dividend. This most likely wont happen for some time if you are using 2018 options. Basically as long as the put is trading for more than the dividend you should not have to worry.
Also you don't want to be in a position where you need to exercise your long call to capture the dividend. This most likely wont happen for some time if you are using 2018 options. Basically as long as the put is trading for more than the dividend you should not have to worry.