In my experience the best way to get crispy skin is to get the temp over 300, well over 300. . Even when using my Webers to do chicken I found crispy skin to be elusive . I found the answer(as well as this cooker) on a site that is loaded with experienced folks that have been at it for a good while. What I do is basically smoke the bird as you normally would at about 235-250 then finish it at 350 or so to crisp the skin up real good. Easy on a kettle not so easy with an electric as temps are usually limited to 250. I would suggest pulling your chicken a bit early and finishing in the oven at 375. That said crispy is an objective thing. What is acceptably crispy to one may not be to another. If you like the results you get at 250 your chicken is done. There is no right or wrong per se. Just what is right or wrong for you.
Didn't find an intro thread so "hello" to all. I am a charcoal/wood burning guy that has decided to add one of these to the arsenal . Best bang for the buck electric on the planet as far as I am concerned.