Double Major with Business and Architecture

Hello, I am an BS architecture student who just finished my first year of architecture school. I was planning on getting a minor in business, but I just realized if I took max summer classes, I could get a double major in business and architecture in 5 years. I was concerned about an overload of classes because of how demanding studios are, however I would only have to take 4 classes in the summer and in the regular semesters for 5 years to get both degrees. Because I still have to get my masters, I would be in school for about 7-8 years total. Maybe 8 because I wanted to get a certificate in historic preservation or a dual masters in property development. Should I get the double major or just the minor. Keep in mind I want to start my own business some day. Probably in land development and architecture. Thank you for your thoughts and help.