Are you financially ready?
You have to look at your financial position before starting a business. Do you have capital to invest in this business, are you going to work part time to fund the business, or do you have a partner who is working and bringing in an income?
Whatever you decide to do, however well you plan, cash flow and finance in general will be a problem at some time during your business development. There will always be some costs that are unexpected or unplanned for.