Business offer

A friend of mine told me that he is interested to open a bookstore. It seems that he is planning to retire/resign from teaching this year and has in his mind to start a Christian bookstore. He approached me inquiring whether I would be interested to start the business together with him. Well, I was quite surprised to hear that he is resigning from teaching. He is a good BM teacher and I am sure many students have benefited from this teaching. As for the business opportunity, I need to ask God to see whether I should join him and if yes, where I can fit into the plan.