I would recommend to
1. Define your ideal customer profile (Industry, Titles that buy from you, company revenues / # of employees).
2. Create a list of 500 prospects across 75 companies (you can use ZoomInfo to create that list).
3. Approach them via a mix of email + calls + social (twitter, LinkedIn) over a period of 4-5 weeks. The goal should be to set up an appointment/demo instead of selling the product directly. Use different templates to see which ones respond best.
I think, if done right you should be able to generate 10-15 demos, which give you a fair idea on how your messaging / product resonates with your potential customers.
Once you have a working formula, you can scale it by hiring more staff.