Running a business with family can be a real challenge. you have to be smart and aware about it. The key to success is having a solid game plan from the get-go.
Make sure you have a clear understanding of each other's strengths and weaknesses, and assign roles accordingly. You don't want to be in a situation where one person is overburdened while the other is coasting.
Set up clear lines of communication and establish a process for decision making. It's important that everyone is on the same page and that you have a system in place to resolve conflicts.
Also, don't forget the importance of separating business from personal. This can be tough, especially with family, but it's crucial to keep your emotions in check and make decisions based on what's best for the business.
Personally, I would not get in a business with family and friends, I prefer strangers and outsiders because you can real vulnerable with family.