Turkey and potatoes on BGE

larabobara

Hi everyone!  I'm attempting my first turkey breast tonight.  I think I'm going to follow the method described here: http://www.seriouseats.com/2015/11/the-food-lab-step-by-step-guide-smoking-turkey.html
(spatchcocked, indirect w/plate setter legs up, 275-ish, wood chips mixed in with lump bc I don't have any wood chunks).  

I have three questions: 
(1) 150?  I generally trust the folks over at Serious Eats, but 150 makes me nervous. 
(2)  If I wrap up some baking and sweet potatoes and throw them on with the turkey, how long do y'all think it will take them to cook? I'm a wondering if they'll actually be tender by the time the bird is done.
(3) have any of you ever added baking powder to the rub, as suggested here?  I added some to Tsunami Spin and am so curious to see if I like the addition!

Fingers crossed!  I've attached a photo of the prepped turkey here.

larabobara

Never mind about the potatoes!  I just found this thread (http://eggheadforum.com/discussion/1134440/whole-baked-potatoes) that answered my question.  Stay tuned for "after" photos!

Chris8938

The 150* is taking into account the assumed 10* carryover temp rise after pulling.  I have pulled at 150* without any problems.