I've worked with over 50 B2B companies to help them generate, nurture and close your leads.

I think the question you asked is premature.

B2B Saas startups usually goes through 4 stages discovery, validation, efficiency, and scale.

Validation from one customer is a start but is not enough validation to move to the efficiency stage.

If you disagree try answering these questions which I recommend every startup have answered before move to the efficiency stage:
1) Does my B2B product solve the needs for 5 (high level) or 10 (medium level) executives?
2) Which types of executives does this product work for? (answered so granularly that if you provide a smart assistant with some knowledge of online research with the explanation she/he can come back to you with 25 targets)
3) Which types of executives does this product not work for? (answered so granularly that if you provide a smart assistant with some knowledge of online research with the explanation she/he can eliminate executives not a fit on their own)
4) Do we have a clear elevator pitch of which problem/goal my product helps executives solve that gets curiosity? TEST: When I tested it with 10 executives, 3 of them expressed curiosity?
5) Do we have strong relationships with at least 3 connectors who know the types of executives in #2? Are these connectors champions of my product such that they are willing to make at least 3 introductions each?

If you don't have the answers to these questions you need to get them. Happy to help explain further over a call if you need.

If you do have answers to these questions and are truly ready to move on to the efficiency stage then share them with me before our call so I can help you figure out the best path forward to developing a target list, reaching out, and closing them.