I know it sounds strange but it's good advice to have business before you start a business. Go to local Guilds and bees to see if there is a true need. So many people retire to Florida and start their dream business. These shops take a lot of capital and don't have the support of locals, that they require to thrive. They end up losing it and all their money. I would recommend not to "open a standard store front". Start small with a service whether it is longarming or teaching sewing. Feel the need of your community and see what happens.