RE: dead deer question.....eh.
In all honesty, it probably wont bother the deer much. I found a small buck dead on my property and coyotes were everywhere and never noticed any drop in deer activity. If the coyotes were there to find the deer, then they were around the area the whole time and the deer are more than likely used to them. I wouldn't worry about how it affects hunting. Just get out there and hunt, you surely wont take anything sitting on the couch at home.
Good luck and happy hunting.