Can it be a two month goal?

I know it says in the workbook that we need to pick a goal to finish in one month, yet I have this goal I have been dying to accomplish but it will take longer: I have this 8 week online course that will help me launch my online business
1) will it be ok to set a goal to finish in two months instead of one?
2) will it be ok to write “follow the course steps” since I don’t know the detailed steps to launching the online business, and the course I have is supposed to guide me through?