If I am doing thighs only, I use 225 (lower and slower than whole chicken). They can go as high as 175-180. Wrap and rest 20-30 minutes. They will be more fall apart tender at that point, because more connective tissue will have been rendered. There is a big advantage to cooking dark meat separate from white meat just for that reason. They are a little hard to temp (especially since yours are boneless), but temp in as many places as you can. And I never open the door, sauce, and put back in. Sauce is applied to the cooked chicken, and in my case, served on the side. I don't see any advantage to saucing chicken during the cook. The skin on which the sauce rests is kind of inedible anyway, and the sauce/flavor will not soak into the meat if you are applying it at the end of the cook.