We live in Florida and are planning for a trip to TN(Gatlinburg, Pigeon Forge) later this year, We want to be there approximately when the leaves are at their peak. We will be a group of 15-20 people planning to come together. Any recommendations on planning this trip. We will be driving in one single vehicle which would carry 15 people. Is there any website which posts the probable dates of peak fall color in a particular state well in advance?