By October our farm store is pretty much all pumpkin patch so your setting should be about the same as ours. Defintely, yes, to the melters - people won't buy tarts if they have to go to the inconvenience of tracking down a melter elsewhere - and yes to those bestsellers. Even at a themed event I think it's important to have a well-rounded line-up. I don't carry more than 2 -3 pumpkin ones, along with another harvest-ish one and cinnamon. IMO too many scents in the same theme tends to confuse customers. Then I add some holiday ones - cranberry marmalade, winter blast, cinnaberry. Last year I sold more winter/Christmas stuff in October than in December so don't worry that it's too early. Then I have my year 'round favorites like lemon, black raspberry vanilla, sweet orange & chili pepper. Overall, I usually have up to 36 fragrances available but you could easily do less with some good choices.