Actually worked really well- better than I expected. Once the blocks are preheated I was able to hold 250F easily. Finished in the oven at 350 to get temp and crisp up the skin. At least I have something to do BBQ on until I can build my smoker. Waiting on friend to acquire steel for the project.
Wish I'd snapped a photo of the bird, came out pretty and tasty. Brined it for ~18 hours so everything was juicy.