I will be watching and cheering for you. May I make a suggestion? The biggest businesses all start with a gimmick of somekind. (Such as A bunch of kids wanted to keep mom busy, and MSQC was born. Her gimmick was to put videos on youtube about quick and easy methods for getting quilts done and having fun doing it.) I would not only have a featured supply, (your repro. fabrics) but a wonderful gimmick like a guaranty that all precuts are actually the stated size. (Too many online shops sell whatever they can get their hands on for cheap.)
Good luck! As I said, I will be cheering for you.