I agree with Rich - try a whole bone-in turkey breast first. That's what I did when first trying the higher heat smoke. I've done turkey low and slow for years... in fact, that's the ONLY way we smoked it pre-WSM days, 'cause we didn't know any other way. After trying higher oven-type temps in the WSM, though, I much prefer that direction. My opinion is YES, it's worth it to do it in the smoker, at the higher temps. Brine it with a nice apple juice brine, hit with apple or cherry smoke, maybe a nice maple... mmmm mmmmmm! May need to start practicing for Thanksgiving early myself!
Unless you're particularly going for presentation value, it's worth it to separate the pieces on the turkey since your thighs and drumsticks will need to cook to 180 whereas the breast is good at 160. That being said, however, we have more usually cooked whole birds rather than the pieces. We like to present both a smoked and a fried turkey together side by side, sometimes including a smo-fried bird as well (hit hard with smoke for a short time, then fried) so people can taste the difference.
Not much help, I know, but my 2-cents, anyway! /infopop/emoticons/icon_biggrin.gif
Keri C
Smokin on Tulsa Time