The FAQ i told you about is by Carl Shusterman
Question #7: After applying for I-485, when can I start my own business? Does it have to be in similar occupation as the original job?
Carl Shusterman: The 180-day portability rule applies to persons who work for their own businesses as well as to those who work for others. However, the requirements remain the same. At the time that the I-485 is submitted, it must be your intent to work for the petitioning employer indefinitely. If INS fails to decide your application within 180 days after filing, you will not be penalized if you have changed jobs and employers as long as the new job is in the same or a similar occupational classification. This is true whether the change of jobs/employers occurs before or after the 180 day limitation.
http://shusterman.com/ look at AC21 and try to find it
Question #7: After applying for I-485, when can I start my own business? Does it have to be in similar occupation as the original job?
Carl Shusterman: The 180-day portability rule applies to persons who work for their own businesses as well as to those who work for others. However, the requirements remain the same. At the time that the I-485 is submitted, it must be your intent to work for the petitioning employer indefinitely. If INS fails to decide your application within 180 days after filing, you will not be penalized if you have changed jobs and employers as long as the new job is in the same or a similar occupational classification. This is true whether the change of jobs/employers occurs before or after the 180 day limitation.
http://shusterman.com/ look at AC21 and try to find it