I think your initial thoughts are great.
A farmers market is always a good way to see if people like your product and a great way to learn your costs, how much time is involved and of course how much profit you can make.
By the way, yes you will have to deal with the heat, both for keeping the cakes yourself and for your customers to take them home.
Brad Sugars is the founder of ActionCOACH, the world's number one business coaching firm. As a world-renowned entrepreneur, author and Business Coach, he has helped more than a million clients around the world find business and personal success.
Sugars has owned and operated more than two dozen companies including his main company, ActionCOACH, which has nearly 1,000 offices in 26 countries.
