Also check out the local area, is there likely to be a new superstore opening soon, just down the road? That will affect trade?
What type of people live locally, do the locals all work? If they do, then you will need to open earlier and later to cover the people befoe they go to work, and when they return?
Does the store have a post office - is it closing?
Is there a local Post Office that is closing - that might drive trade towards your store?
What footfall do they get on average per day?