Halloween Decorating

Questions for everyone regarding Halloween decorating: When do you put out your Halloween decorations? Do you integrate with your fall decorations or replace until Halloween is over and then put your Fall stuff up again? Not sure how I want to handle my decorations. My house is currently all decked out for Fall, not too much room for Halloween unless I take some Fall stuff down. But it was a lot of work getting everything to this stage! Not sure how I feel about having a little of both up at the same time? Do you think it will look scattered / not cohesive? Thoughts please :-)