If they are doing this much due diligence then they are good investors and if they invest then it's a good signal that you are doing something right. If they do

If they are doing this much due diligence then they are good investors and if they invest then it's a good signal that you are doing something right. If they don't invest then it's a great opportunity to learn from them as much as possible as to why they think you are on a wrong path and how to fix it.