claudio15 -- You bring up some good questions. However, the questions can only be answered by knowing your particular situation. You are on the right track with the experiences that you and your brother have. It sounds like you have good business sense and your brother has good electrical skills. Both of these attributes should help your business. Once you've completed your business plan, answers to your questions should become more apparent. A good, thoughtout business plan will give you the direction you are seeking. There are many sources (banks, Better Business Bureau, local colleges, the internet) that are available to help you build a solid business plan. You can build different scenerscenariosn your business plan that will show you various risks based upon different conditions. The more analysis you do now will greatly improve your chances for a successful business. Good luck.