Hi- I plan on smoking the Thanksgiving turkey this year. I will be cooking for 17 people so I need a lot of bird. My plan was to smoke two 13 lb birds in my 18.5" WSM. Has anyone done two in the WSM at the same time? If not, do you think it will work? How much cooking time difference do you think it will be with 1 vs 2 birds? I plan on doing a test smoke this weekend of just 1 bird, but some advice on the above questions would be greatly appreciated. Thanks!