The hard part is capitol - you are going to need a lot of it. Between the bldg, insurance - fire - liability -workers comp, products, shelves, utilities, building signs, State and local business licenses, Accountant (get your deductions right as it will save you some cash), advertising, employees, (?) etc Also don't plan on taking any money from the business for at least the first year. Would say at a minimum you will need 75K. not trying to burst your bubble but there is a lot of up front costs as well as a lot of of research that needs down. Getting suppliers is a start but also will need an attorney to make sure the agreements with the suppliers are fair to you. Also keep an eye open for any agreements that would not allow you to use several suppliers.
Anyway just wanted to give you some ideas of what problems you may face.
Good luck